diff --git a/contracts/NFTPool/impl/BaseFilterV1.sol b/contracts/NFTPool/impl/BaseFilterV1.sol
index 5d00622..7b1fc7d 100644
--- a/contracts/NFTPool/impl/BaseFilterV1.sol
+++ b/contracts/NFTPool/impl/BaseFilterV1.sol
@@ -15,6 +15,15 @@ import {ReentrancyGuard} from "../../lib/ReentrancyGuard.sol";
 contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
     using SafeMath for uint256;
 
+    //=================== Event ===================
+    event ChangeNFTInPrice(uint256 newGsStart, uint256 newCr, bool toggleFlag);
+    event ChangeNFTRandomOutPrice(uint256 newGsStart, uint256 newCr, bool toggleFlag);
+    event ChangeNFTTargetOutPrice(uint256 newGsStart, uint256 newCr, bool toggleFlag);
+    event ChangeNFTAmountRange(uint256 maxNFTAmount, uint256 minNFTAmount);
+    event ChangeTokenIdRange(uint256 nftIdStart, uint256 nftIdEnd);
+    event ChangeTokenIdMap(uint256 tokenIds, bool isRegistered);
+    event ChangeFilterName(string newFilterName);
+
     //=================== Storage ===================
     string public _FILTER_NAME_;
 
@@ -29,6 +38,8 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
     mapping(uint256 => uint256) public _NFT_RESERVE_;
 
     uint256[] public _NFT_IDS_;
+    //tokenId => index + 1 of _NFT_IDS_
+    mapping(uint256 => uint256) public _TOKENID_IDX_;
     uint256 public _TOTAL_NFT_AMOUNT_;
     uint256 public _MAX_NFT_AMOUNT_;
     uint256 public _MIN_NFT_AMOUNT_;
@@ -87,12 +98,8 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
     }
 
     function getNFTIndexById(uint256 tokenId) public view returns (uint256) {
-        uint256 i = 0;
-        for (; i < _NFT_IDS_.length; i++) {
-            if (_NFT_IDS_[i] == tokenId) break;
-        }
-        require(i < _NFT_IDS_.length, "TOKEN_ID_NOT_EXSIT");
-        return i;
+        require(_TOKENID_IDX_[tokenId] > 0, "TOKEN_ID_NOT_EXSIT");
+        return _TOKENID_IDX_[tokenId] - 1;
     }
 
     //==================== Query Price ==================
@@ -197,17 +204,19 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
         _GS_START_IN_ = newGsStart;
         _CR_IN_ = newCr;
         _NFT_IN_TOGGLE_ = true;
+
+        emit ChangeNFTInPrice(newGsStart, newCr, toggleFlag);
     }
 
-    function changeNFTRandomInPrice(
+    function changeNFTRandomOutPrice(
         uint256 newGsStart,
         uint256 newCr,
         bool toggleFlag
     ) external onlySuperOwner {
-        _changeNFTRandomInPrice(newGsStart, newCr, toggleFlag);
+        _changeNFTRandomOutPrice(newGsStart, newCr, toggleFlag);
     }
 
-    function _changeNFTRandomInPrice(
+    function _changeNFTRandomOutPrice(
         uint256 newGsStart,
         uint256 newCr,
         bool toggleFlag
@@ -216,6 +225,8 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
         _GS_START_RANDOM_OUT_ = newGsStart;
         _CR_RANDOM_OUT_ = newCr;
         _NFT_RANDOM_OUT_TOGGLE_ = true;
+
+        emit ChangeNFTRandomOutPrice(newGsStart, newCr, toggleFlag);
     }
 
     function changeNFTTargetOutPrice(
@@ -235,6 +246,8 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
         _GS_START_TARGET_OUT_ = newGsStart;
         _CR_TARGET_OUT_ = newCr;
         _NFT_TARGET_OUT_TOGGLE_ = true;
+
+        emit ChangeNFTTargetOutPrice(newGsStart, newCr, toggleFlag);
     }
 
     function changeNFTAmountRange(uint256 maxNFTAmount, uint256 minNFTAmount)
@@ -248,6 +261,8 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
         require(maxNFTAmount >= minNFTAmount, "AMOUNT_INVALID");
         _MAX_NFT_AMOUNT_ = maxNFTAmount;
         _MIN_NFT_AMOUNT_ = minNFTAmount;
+
+        emit ChangeNFTAmountRange(maxNFTAmount, minNFTAmount);
     }
 
     function changeTokenIdRange(uint256 nftIdStart, uint256 nftIdEnd) external onlySuperOwner {
@@ -259,6 +274,8 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
 
         _NFT_ID_START_ = nftIdStart;
         _NFT_ID_END_ = nftIdEnd;
+
+        emit ChangeTokenIdRange(nftIdStart, nftIdEnd);
     }
 
     function changeTokenIdMap(uint256[] memory tokenIds, bool[] memory isRegistered)
@@ -273,6 +290,7 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
 
         for (uint256 i = 0; i < tokenIds.length; i++) {
             _SPREAD_IDS_REGISTRY_[tokenIds[i]] = isRegistered[i];
+            emit ChangeTokenIdMap(tokenIds[i], isRegistered[i]);
         }
     }
 
@@ -281,5 +299,6 @@ contract BaseFilterV1 is InitializableOwnable, ReentrancyGuard {
         onlySuperOwner
     {
         _FILTER_NAME_ = newFilterName;
+        emit ChangeFilterName(newFilterName);
     }
 }
diff --git a/contracts/NFTPool/impl/Controller.sol b/contracts/NFTPool/impl/Controller.sol
index d4e87e6..6a63b07 100644
--- a/contracts/NFTPool/impl/Controller.sol
+++ b/contracts/NFTPool/impl/Controller.sol
@@ -29,6 +29,8 @@ contract Controller is InitializableOwnable {
 
     //==================== Event =====================
     event SetEmergencyWithdraw(address filter, bool isOpen);
+    event SetFilterAdminFeeRateInfo(address filterAdmin, uint256 nftInFee, uint256 nftOutFee, bool isOpen);
+    event SetGlobalParam(uint256 nftInFee, uint256 nftOutFee);
 
     //==================== Ownable ====================
 
@@ -44,11 +46,15 @@ contract Controller is InitializableOwnable {
             isOpen: isOpen
         });
         filterAdminFeeRates[filterAdminAddr] = feeRateInfo;
+
+        emit SetFilterAdminFeeRateInfo(filterAdminAddr, nftInFeeRate, nftOutFeeRate, isOpen);
     }
 
     function setGlobalParam(uint256 nftInFeeRate, uint256 nftOutFeeRate) external onlyOwner {
         _GLOBAL_NFT_IN_FEE_RATE_ = nftInFeeRate;
         _GLOBAL_NFT_OUT_FEE_RATE_ = nftOutFeeRate;
+
+        emit SetGlobalParam(nftInFeeRate, nftOutFeeRate);
     }
 
     function setEmergencyWithdraw(address filter, bool isOpen) external onlyOwner {
diff --git a/contracts/NFTPool/impl/FilterAdmin.sol b/contracts/NFTPool/impl/FilterAdmin.sol
index 8b70970..1716f39 100644
--- a/contracts/NFTPool/impl/FilterAdmin.sol
+++ b/contracts/NFTPool/impl/FilterAdmin.sol
@@ -26,6 +26,8 @@ contract FilterAdmin is InitializableInternalMintableERC20 {
 
     // ============ Event ============
     event ChangeFeeRate(uint256 fee);
+    event AddFilter(address filter);
+    event FilterAdminInit(address owner, uint256 feeRate);
 
     function init(
         address owner,
@@ -47,8 +49,7 @@ contract FilterAdmin is InitializableInternalMintableERC20 {
             _FILTER_REGISTRY_[filters[i]] = true;
         }
 
-        //event FilterAdminInit(addres owner, uint256 feeRate)
-
+        emit FilterAdminInit(owner, feeRate);
     }
 
     function mintFragTo(address to, uint256 rawAmount) external returns (uint256) {
@@ -114,8 +115,9 @@ contract FilterAdmin is InitializableInternalMintableERC20 {
     function addFilter(address[] memory filters) external onlyOwner {
         for(uint256 i = 0; i < filters.length; i++) {
             require(!isRegisteredFilter(filters[i]), "FILTER_ALREADY_EXIST");
-            _FILTERS_.push(filter[i]);
-            _FILTER_REGISTRY_[filter[i]] = true;
+            _FILTERS_.push(filters[i]);
+            _FILTER_REGISTRY_[filters[i]] = true;
+            emit AddFilter(filters[i]);
         }
     }
 
diff --git a/contracts/NFTPool/impl/FilterERC1155V1.sol b/contracts/NFTPool/impl/FilterERC1155V1.sol
index 4471a0f..99a4a28 100644
--- a/contracts/NFTPool/impl/FilterERC1155V1.sol
+++ b/contracts/NFTPool/impl/FilterERC1155V1.sol
@@ -17,6 +17,13 @@ import {BaseFilterV1} from "./BaseFilterV1.sol";
 contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
     using SafeMath for uint256;
 
+    //=============== Event ==================
+    event FilterInit(address filterAdmin, address nftCollection, string name);
+    event NftIn(uint256 tokenId, uint256 amount);
+    event TargetOut(uint256 tokenId, uint256 amount);
+    event RandomOut(uint256 tokenId, uint256 amount);
+    event EmergencyWithdraw(address nftContract,uint256 tokenId, uint256 amount, address to);
+
     function init(
         address filterAdmin,
         address nftCollection,
@@ -32,7 +39,7 @@ contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
         _NFT_COLLECTION_ = nftCollection;
 
         _changeNFTInPrice(priceRules[0], priceRules[1], toggles[0]);
-        _changeNFTRandomInPrice(priceRules[2], priceRules[3], toggles[1]);
+        _changeNFTRandomOutPrice(priceRules[2], priceRules[3], toggles[1]);
         _changeNFTTargetOutPrice(priceRules[4], priceRules[5], toggles[2]);
 
         _changeNFTAmountRange(numParams[2], numParams[3]);
@@ -42,7 +49,7 @@ contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
             _SPREAD_IDS_REGISTRY_[spreadIds[i]] = true;
         }
 
-        //event FilterInit(address filterAdmin, address nftCollection, string memory name);
+        emit FilterInit(filterAdmin, nftCollection, filterName);
     }
 
     // ================= Trading ================
@@ -56,21 +63,24 @@ contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
         for (uint256 i = 0; i < tokenIds.length; i++) {
             uint256 tokenId = tokenIds[i];
             require(isNFTIDValid(tokenId), "NFT_ID_NOT_SUPPORT");
-            totalAmount += _maintainERC1155In(tokenId);
+            uint256 inAmount = _maintainERC1155In(tokenId);
+            totalAmount += inAmount;
+            emit NftIn(tokenId, inAmount);
         }
         (uint256 rawReceive, ) = queryNFTIn(totalAmount);
         received = IFilterAdmin(_OWNER_).mintFragTo(to, rawReceive);
     }
 
     function ERC1155TargetOut(
-        uint256[] memory indexes,
+        uint256[] memory tokenIds,
         uint256[] memory amounts,
         address to
     ) external preventReentrant returns (uint256 paid) {
         uint256 totalAmount = 0;
-        for (uint256 i = 0; i < indexes.length; i++) {
+        for (uint256 i = 0; i < tokenIds.length; i++) {
             totalAmount += amounts[i];
-            _transferOutERC1155(to, indexes[i], amounts[i]);
+            _transferOutERC1155(to, tokenIds[i], amounts[i]);
+            emit TargetOut(tokenIds[i], amounts[i]);
         }
         (uint256 rawPay, ) = queryNFTTargetOut(totalAmount);
         paid = IFilterAdmin(_OWNER_).burnFragFrom(msg.sender, rawPay);
@@ -89,7 +99,8 @@ contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
             for (uint256 j = 0; j < _NFT_IDS_.length; j++) {
                 sum += _NFT_RESERVE_[_NFT_IDS_[j]];
                 if (sum >= randomNum) {
-                    _transferOutERC1155(to, j, 1);
+                    _transferOutERC1155(to, _NFT_IDS_[j], 1);
+                    emit RandomOut( _NFT_IDS_[j], 1);
                     break;
                 }
             }
@@ -120,13 +131,12 @@ contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
 
     function _transferOutERC1155(
         address to,
-        uint256 index,
+        uint256 tokenId,
         uint256 amount
     ) internal {
-        require(index < _NFT_IDS_.length, "INDEX_NOT_EXIST");
-        uint256 tokenId = _NFT_IDS_[index];
+        require(_TOKENID_IDX_[tokenId] > 0, "TOKENID_NOT_EXIST");
         IERC1155(_NFT_COLLECTION_).safeTransferFrom(address(this), to, tokenId, amount, "");
-        _maintainERC1155Out(index, tokenId);
+        _maintainERC1155Out(tokenId);
     }
 
     function emergencyWithdraw(
@@ -149,19 +159,22 @@ contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
             uint256 tokenId = tokenIds[i];
             IERC1155(nftContract[i]).safeTransferFrom(address(this), to, tokenId, amounts[i], "");
             if (_NFT_RESERVE_[tokenId] > 0 && nftContract[i] == _NFT_COLLECTION_) {
-                _maintainERC1155Out(getNFTIndexById(tokenId), tokenId);
+                _maintainERC1155Out(tokenId);
             }
+            emit EmergencyWithdraw(nftContract[i],tokenIds[i], amounts[i], to);
         }
     }
 
-    function _maintainERC1155Out(uint256 index, uint256 tokenId) internal {
+    function _maintainERC1155Out(uint256 tokenId) internal {
         uint256 currentAmount = IERC1155(_NFT_COLLECTION_).balanceOf(address(this), tokenId);
         uint256 outAmount = _NFT_RESERVE_[tokenId].sub(currentAmount);
         _NFT_RESERVE_[tokenId] = currentAmount;
         _TOTAL_NFT_AMOUNT_ -= outAmount;
         if (currentAmount == 0) {
+            uint256 index = _TOKENID_IDX_[tokenId] - 1;
             _NFT_IDS_[index] = _NFT_IDS_[_NFT_IDS_.length - 1];
             _NFT_IDS_.pop();
+            _TOKENID_IDX_[tokenId] = 0;
         }
     }
 
@@ -171,6 +184,7 @@ contract FilterERC1155V1 is IERC1155Receiver, BaseFilterV1 {
         if (_NFT_RESERVE_[tokenId] == 0 && currentAmount > 0) {
             _NFT_IDS_.push(tokenId);
         }
+        _TOKENID_IDX_[tokenId] = _NFT_IDS_.length;
         _NFT_RESERVE_[tokenId] = currentAmount;
         _TOTAL_NFT_AMOUNT_ += inAmount;
     }
diff --git a/contracts/NFTPool/impl/FilterERC721V1.sol b/contracts/NFTPool/impl/FilterERC721V1.sol
index 243c11d..5de302a 100644
--- a/contracts/NFTPool/impl/FilterERC721V1.sol
+++ b/contracts/NFTPool/impl/FilterERC721V1.sol
@@ -20,6 +20,13 @@ import {BaseFilterV1} from "./BaseFilterV1.sol";
 contract FilterERC721V1 is IERC721Receiver, BaseFilterV1 {
     using SafeMath for uint256;
 
+    //============== Event =================
+    event FilterInit(address filterAdmin, address nftCollection, string name);
+    event NftIn(uint256 tokenId);
+    event TargetOut(uint256 tokenId);
+    event RandomOut(uint256 tokenId);
+    event EmergencyWithdraw(address nftContract,uint256 tokenId, address to);
+
     function init(
         address filterAdmin,
         address nftCollection,
@@ -34,7 +41,7 @@ contract FilterERC721V1 is IERC721Receiver, BaseFilterV1 {
 
         _NFT_COLLECTION_ = nftCollection;
         _changeNFTInPrice(priceRules[0], priceRules[1], toggles[0]);
-        _changeNFTRandomInPrice(priceRules[2], priceRules[3], toggles[1]);
+        _changeNFTRandomOutPrice(priceRules[2], priceRules[3], toggles[1]);
         _changeNFTTargetOutPrice(priceRules[4], priceRules[5], toggles[2]);
 
         _changeNFTAmountRange(numParams[2], numParams[3]);
@@ -44,7 +51,7 @@ contract FilterERC721V1 is IERC721Receiver, BaseFilterV1 {
             _SPREAD_IDS_REGISTRY_[spreadIds[i]] = true;
         }
 
-        //event FilterInit(address filterAdmin, address nftCollection, string memory name);
+        emit FilterInit(filterAdmin, nftCollection, filterName);
     }
 
     // ================= Trading ================
@@ -63,24 +70,27 @@ contract FilterERC721V1 is IERC721Receiver, BaseFilterV1 {
                 "NFT_NOT_SEND"
             );
             _NFT_IDS_.push(tokenId);
+            _TOKENID_IDX_[tokenId] = _NFT_IDS_.length;
             _NFT_RESERVE_[tokenId] = 1;
 
-            //event Erc721TokenIn(uint256 index, uint256 tokenId);
+            emit NftIn(tokenId);
         }
         _TOTAL_NFT_AMOUNT_ = _NFT_IDS_.length;
         (uint256 rawReceive, ) = queryNFTIn(tokenIds.length);
         received = IFilterAdmin(_OWNER_).mintFragTo(to, rawReceive);
     }
 
-    function ERC721TargetOut(uint256[] memory indexes, address to)
+    function ERC721TargetOut(uint256[] memory tokenIds, address to)
         external
         preventReentrant
         returns (uint256 paid)
     {
-        (uint256 rawPay, ) = queryNFTTargetOut(indexes.length);
+        (uint256 rawPay, ) = queryNFTTargetOut(tokenIds.length);
         paid = IFilterAdmin(_OWNER_).burnFragFrom(msg.sender, rawPay);
-        for (uint256 i = 0; i < indexes.length; i++) {
-            _transferOutERC721(to, indexes[i]);
+        for (uint256 i = 0; i < tokenIds.length; i++) {
+            _transferOutERC721(to, tokenIds[i]);
+
+            emit TargetOut(tokenIds[i]);
         }
         _TOTAL_NFT_AMOUNT_ = _NFT_IDS_.length;
     }
@@ -93,7 +103,10 @@ contract FilterERC721V1 is IERC721Receiver, BaseFilterV1 {
         (uint256 rawPay, ) = queryNFTRandomOut(amount);
         paid = IFilterAdmin(_OWNER_).burnFragFrom(msg.sender, rawPay);
         for (uint256 i = 0; i < amount; i++) {
-            _transferOutERC721(to, _getRandomNum() % _TOTAL_NFT_AMOUNT_);
+            uint256 index = _getRandomNum() % _TOTAL_NFT_AMOUNT_;
+            _transferOutERC721(to, _NFT_IDS_[index]);
+
+            emit RandomOut(_NFT_IDS_[index]);
         }
         _TOTAL_NFT_AMOUNT_ = _NFT_IDS_.length;
     }
@@ -109,16 +122,15 @@ contract FilterERC721V1 is IERC721Receiver, BaseFilterV1 {
         return IERC721Receiver.onERC721Received.selector;
     }
 
-    function _transferOutERC721(address to, uint256 index) internal {
-        require(index < _NFT_IDS_.length, "INDEX_NOT_EXIST");
-        uint256 tokenId = _NFT_IDS_[index];
+    function _transferOutERC721(address to, uint256 tokenId) internal {
+        require(_TOKENID_IDX_[tokenId] > 0, "TOKENID_NOT_EXIST");
+        uint256 index = _TOKENID_IDX_[tokenId] - 1;
+        require(index < _NFT_IDS_.length, "INDEX_INVALID");
         IERC721(_NFT_COLLECTION_).safeTransferFrom(address(this), to, tokenId);
         _NFT_IDS_[index] = _NFT_IDS_[_NFT_IDS_.length - 1];
         _NFT_IDS_.pop();
         _NFT_RESERVE_[tokenId] = 0;
-        
-        //idx,oldTokenId,newTokenId
-        //event Erc721Out(uint256 index, uint256 tokenId)
+        _TOKENID_IDX_[tokenId] = 0;
     }
 
     function emergencyWithdraw(
@@ -142,6 +154,7 @@ contract FilterERC721V1 is IERC721Receiver, BaseFilterV1 {
                 _NFT_RESERVE_[tokenId] = 0;
             }
             IERC721(nftContract[i]).safeTransferFrom(address(this), to, tokenIds[i]);
+            emit EmergencyWithdraw(nftContract[i],tokenIds[i],to);
         }
         _TOTAL_NFT_AMOUNT_ = _NFT_IDS_.length;
     }
diff --git a/contracts/NFTPool/intf/IFilter.sol b/contracts/NFTPool/intf/IFilter.sol
index 048a9b4..753851d 100644
--- a/contracts/NFTPool/intf/IFilter.sol
+++ b/contracts/NFTPool/intf/IFilter.sol
@@ -39,14 +39,14 @@ interface IFilter {
 
     function ERC721In(uint256[] memory tokenIds, address to) external returns (uint256 received);
 
-    function ERC721TargetOut(uint256[] memory indexes, address to) external returns (uint256 paid);
+    function ERC721TargetOut(uint256[] memory tokenIds, address to) external returns (uint256 paid);
 
     function ERC721RandomOut(uint256 amount, address to) external returns (uint256 paid);
 
     function ERC1155In(uint256[] memory tokenIds, address to) external returns (uint256 received);
 
     function ERC1155TargetOut(
-        uint256[] memory indexes,
+        uint256[] memory tokenIds,
         uint256[] memory amounts,
         address to
     ) external returns (uint256 paid);
diff --git a/contracts/SmartRoute/DODONFTApprove.sol b/contracts/SmartRoute/DODONFTApprove.sol
index 999d87d..5267231 100644
--- a/contracts/SmartRoute/DODONFTApprove.sol
+++ b/contracts/SmartRoute/DODONFTApprove.sol
@@ -27,6 +27,7 @@ contract DODONFTApprove is InitializableOwnable {
 
     // ============ Events ============
     event AddDODOProxy(address dodoProxy);
+    event RemoveDODOProxy(address oldProxy);
 
     // ============ Modifiers ============
     modifier notLocked() {
@@ -62,6 +63,7 @@ contract DODONFTApprove is InitializableOwnable {
 
     function removeDODOProxy (address oldDodoProxy) external onlyOwner {
         _IS_ALLOWED_PROXY_[oldDodoProxy] = false;
+        emit RemoveDODOProxy(oldDodoProxy);
     }
 
 
diff --git a/contracts/SmartRoute/proxies/DODONFTPoolProxy.sol b/contracts/SmartRoute/proxies/DODONFTPoolProxy.sol
index 46fcc1b..ba17095 100644
--- a/contracts/SmartRoute/proxies/DODONFTPoolProxy.sol
+++ b/contracts/SmartRoute/proxies/DODONFTPoolProxy.sol
@@ -33,6 +33,20 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
 
     // ============ Event ==============
     event SetFilterTemplate(uint256 idx, address filterTemplate);
+    event Erc721In(address filter, address to, uint256 received);
+    event Erc1155In(address filter, address to, uint256 received);
+    event Erc721TargetOut(address filter, address to, uint256 paid);
+    event Erc1155TargetOut(address filter, address to, uint256 paid);
+    event Erc721RandomOut(address filter, address to, uint256 paid); 
+    event Erc1155RandomOut(address filter, address to, uint256 paid); 
+
+    event CreateNFTPool(address newFilterAdmin, address filter);
+    event CreateFilterV1(address newFilterV1, uint256 filterTemplateKey);
+    event Erc721toErc20(address nftContract, uint256 tokenId, address toToken, uint256 returnAmount);
+
+    event ChangeMaintainer(address newMaintainer);
+    event ChangeContoller(address newController);
+    event ChangeFilterAdminTemplate(address newFilterAdminTemplate);
 
     constructor(
         address cloneFactory,
@@ -65,19 +79,19 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
         uint256 received = IFilter(filter).ERC721In(tokenIds, to);
         require(received >= minMintAmount, "MINT_AMOUNT_NOT_ENOUGH");
 
-        //event Erc721In(address filter, address to, uint256 received);
+        emit Erc721In(filter, to, received);
     }
 
     function erc721TargetOut(
         address filter,
-        uint256[] memory indexes,//tokenId
+        uint256[] memory tokenIds,
         address to,
         uint256 maxBurnAmount 
     ) external {
-        uint256 paid = IFilter(filter).ERC721TargetOut(indexes, to);
+        uint256 paid = IFilter(filter).ERC721TargetOut(tokenIds, to);
         require(paid <= maxBurnAmount, "BURN_AMOUNT_EXCEED");
 
-        //event Erc721TargetOut(address filter, address to, uint256 paid);
+        emit Erc721TargetOut(filter, to, paid);
     }
 
     function erc721RandomOut(
@@ -89,7 +103,7 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
         uint256 paid = IFilter(filter).ERC721RandomOut(amount, to);
         require(paid <= maxBurnAmount, "BURN_AMOUNT_EXCEED");
 
-        //event Erc721TargetOut(address filter, address to, uint256 paid); 
+        emit Erc721RandomOut(filter, to, paid); 
     }
 
     // ================== ERC1155 In and Out ===================
@@ -107,17 +121,21 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
         IDODONFTApprove(_DODO_NFT_APPROVE_).claimERC1155Batch(nftCollection, msg.sender, filter, tokenIds, amounts);
         uint256 received = IFilter(filter).ERC1155In(tokenIds, to);
         require(received >= minMintAmount, "MINT_AMOUNT_NOT_ENOUGH");
+
+        emit Erc1155In(filter, to, received);
     }
 
     function erc1155TargetOut(
         address filter,
-        uint256[] memory indexes,
+        uint256[] memory tokenIds,
         uint256[] memory amounts,
         address to,
         uint256 maxBurnAmount 
     ) external {
-        uint256 paid = IFilter(filter).ERC1155TargetOut(indexes, amounts, to);
+        uint256 paid = IFilter(filter).ERC1155TargetOut(tokenIds, amounts, to);
         require(paid <= maxBurnAmount, "BURN_AMOUNT_EXCEED");
+        
+        emit Erc1155TargetOut(filter, to, paid);
     }
 
     function erc1155RandomOut(
@@ -128,6 +146,8 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
     ) external {
         uint256 paid = IFilter(filter).ERC1155RandomOut(amount, to);
         require(paid <= maxBurnAmount, "BURN_AMOUNT_EXCEED");
+
+        emit Erc1155RandomOut(filter, to, paid);
     }
 
 
@@ -169,7 +189,7 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
             filters
         );
 
-        //event CreateNFTPool(address newFilterAdmin, address filterV1);
+        emit CreateNFTPool(newFilterAdmin, filterV1);
     }
 
     // ================== Create Filter ===================
@@ -194,7 +214,7 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
             spreadIds
         );
 
-        //event CreateFilterV1(address newFilterV1, uint256 filterTemplateKey);
+        emit CreateFilterV1(newFilterV1, key);
     }
 
 
@@ -226,21 +246,25 @@ contract DODONFTPoolProxy is ReentrancyGuard, InitializableOwnable {
         uint256 returnAmount = _generalBalanceOf(toToken, address(this));
 
         _generalTransfer(toToken, msg.sender, returnAmount);
+
+        emit Erc721toErc20(nftContract, tokenId, toToken, returnAmount);
     }
     
 
     //====================== Ownable ========================
     function changeMaintainer(address newMaintainer) external onlyOwner {
         _MAINTAINER_ = newMaintainer;
+        emit ChangeMaintainer(newMaintainer);
     }
 
     function changeFilterAdminTemplate(address newFilterAdminTemplate) external onlyOwner {
         _FILTER_ADMIN_TEMPLATE_ = newFilterAdminTemplate;
+        emit ChangeFilterAdminTemplate(newFilterAdminTemplate);
     }
 
-    function changeController(address newControllerModel) external onlyOwner {
-        _CONTROLLER_ = newControllerModel;
-        //event ChangeContoller(address newController);
+    function changeController(address newController) external onlyOwner {
+        _CONTROLLER_ = newController;
+        emit ChangeContoller(newController);
     }
 
     function setFilterTemplate(uint256 idx, address newFilterTemplate) external onlyOwner {