diff --git a/server/web3dbspider/services/events/common/BaseEventProcess.js b/server/web3dbspider/services/events/common/BaseEventProcess.js
index b6e06ea..e554783 100644
--- a/server/web3dbspider/services/events/common/BaseEventProcess.js
+++ b/server/web3dbspider/services/events/common/BaseEventProcess.js
@@ -87,6 +87,10 @@ class BaseEventProcess {
     }
   }
 
+  async add721NftRefresh(netId, contractAddress, contractName, tokenId) {
+
+  }
+
 }
 
 module.exports = BaseEventProcess;