diff --git a/server/web3dbspider/services/pull_dbevent.js b/server/web3dbspider/services/pull_dbevent.js
index 6ca219f..778ffaa 100644
--- a/server/web3dbspider/services/pull_dbevent.js
+++ b/server/web3dbspider/services/pull_dbevent.js
@@ -68,7 +68,7 @@ class PullDbEvent extends BaseService {
       }
       const {err, rows} = await this.conn.execQuery(
         'SELECT * FROM t_blockchain_event WHERE `idx` > ? AND `idx` <= ? ' +
-          'AND net_id = ? AND event_name = ? AND contract_address = ? ' +
+          'AND net_id = ? AND event_name = ? AND contract_address = ? ORDER BY idx ' +
           'LIMIT ' + LIMIT_COUNT,
         [
           startIdx.toString(),