diff --git a/server/web3dbspider/services/pull_dbevent.js b/server/web3dbspider/services/pull_dbevent.js
index 2d59dcc..75fb3c8 100644
--- a/server/web3dbspider/services/pull_dbevent.js
+++ b/server/web3dbspider/services/pull_dbevent.js
@@ -58,7 +58,7 @@ class PullDbEvent extends BaseService {
   }
 
   async pullEvent() {
-    const logHead = this.getInstanceName() + ' pullDbEvent: ';
+    const logHead = this.genLogHead(' pullDbEvent: ');
     try {
       const startIdx = this.getStartIdx();
       const endIdx = this.getEndIdx();
@@ -135,7 +135,7 @@ class PullDbEvent extends BaseService {
   }
 
   async getLastIdx() {
-    const logHead = this.getInstanceName() + ' getLastIdx: ';
+    const logHead = this.genLogHead(' getLastIdx: ');
     while (true) {
       const {err, row} = await this.conn.ormSelectOne(
         't_dbpull_last_idx',
@@ -159,7 +159,7 @@ class PullDbEvent extends BaseService {
   }
 
   async saveLastIdx(lastIdx) {
-    const logHead = this.getInstanceName() + ' saveLastIdx: ';
+    const logHead = this.genLogHead(' saveLastIdx: ');
     while (true) {
       const {err} = await this.conn.upsert(
         't_dbpull_last_idx',
@@ -191,7 +191,7 @@ class PullDbEvent extends BaseService {
   }
 
   async saveToDb(row) {
-    const logHead = this.getInstanceName() + ' saveToDb: ';
+    const logHead = this.genLogHead(' saveToDb: ');
     while (true) {
       const {err} = await this.conn.upsert(
         this.getTableName(),