diff --git a/src/modules/crawler/crawler.evmbridge.ts b/src/modules/crawler/crawler.evmbridge.ts
index 8c27888..2e5e45e 100644
--- a/src/modules/crawler/crawler.evmbridge.ts
+++ b/src/modules/crawler/crawler.evmbridge.ts
@@ -70,6 +70,7 @@ export class BlockchainEVMCrawler {
     const isExist = await queryRunner.manager.findOneBy(EventLog, { txHashLock: event.transactionHash });
     if (isExist) {
       this.logger.warn('Duplicated event', event.transactionHash);
+      return;
     }
     const blockTimeOfBlockNumber = await this.ethBridgeContract.getBlockTimeByBlockNumber(event.blockNumber);
     const eventUnlock = {
diff --git a/src/modules/crawler/crawler.minabridge.ts b/src/modules/crawler/crawler.minabridge.ts
index ccf8eee..bb2619f 100644
--- a/src/modules/crawler/crawler.minabridge.ts
+++ b/src/modules/crawler/crawler.minabridge.ts
@@ -102,6 +102,7 @@ export class SCBridgeMinaCrawler {
     const isExist = await queryRunner.manager.findOneBy(EventLog, { txHashLock });
     if (isExist) {
       this.logger.warn('Duplicated event', txHashLock);
+      return;
     }
     const eventUnlock = {
       senderAddress: JSON.parse(JSON.stringify(event.event.data.locker)),