diff --git a/tests/system-test/7-tmq/tmqUpdate-multiCtb.py b/tests/system-test/7-tmq/tmqUpdate-multiCtb.py
index 491feb68bd..892137be43 100644
--- a/tests/system-test/7-tmq/tmqUpdate-multiCtb.py
+++ b/tests/system-test/7-tmq/tmqUpdate-multiCtb.py
@@ -18,7 +18,7 @@ class TDTestCase:
     def __init__(self):
         self.snapshot   = 0
         self.vgroups    = 4
-        self.ctbNum     = 100
+        self.ctbNum     = 50
         self.rowsPerTbl = 1000
         self.autoCtbPrefix = 'aCtb'
         
@@ -39,9 +39,9 @@ class TDTestCase:
                     'tagSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1}],
                     'ctbPrefix':  'ctb',
                     'ctbStartIdx': 0,
-                    'ctbNum':     1000,
+                    'ctbNum':     100,
                     'rowsPerTbl': 1000,
-                    'batchNum':   10000,
+                    'batchNum':   1000,
                     'startTs':    1640966400000,  # 2022-01-01 00:00:00.000
                     'pollDelay':  3,
                     'showMsg':    1,
@@ -71,7 +71,6 @@ class TDTestCase:
         # tdSql.query("flush database %s"%(paraDict['dbName']))
         return
 
-    # 自动建表完成数据插入，启动消费
     def tmqCase1(self):
         tdLog.printNoPrefix("======== test case 1: ")
         paraDict = {'dbName':     'dbt',
@@ -85,9 +84,9 @@ class TDTestCase:
                     'tagSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1}],
                     'ctbPrefix':  'ctb',
                     'ctbStartIdx': 0,
-                    'ctbNum':     1000,
+                    'ctbNum':     100,
                     'rowsPerTbl': 1000,
-                    'batchNum':   10000,
+                    'batchNum':   1000,
                     'startTs':    1640966400000,  # 2022-01-01 00:00:00.000
                     'pollDelay':  5,
                     'showMsg':    1,
@@ -167,9 +166,9 @@ class TDTestCase:
                     'tagSchema':   [{'type': 'INT', 'count':1},{'type': 'BIGINT', 'count':1},{'type': 'DOUBLE', 'count':1},{'type': 'BINARY', 'len':32, 'count':1},{'type': 'NCHAR', 'len':32, 'count':1}],
                     'ctbPrefix':  'ctb',
                     'ctbStartIdx': 0,
-                    'ctbNum':     1000,
+                    'ctbNum':     100,
                     'rowsPerTbl': 1000,
-                    'batchNum':   10000,
+                    'batchNum':   1000,
                     'startTs':    1640966400000,  # 2022-01-01 00:00:00.000
                     'pollDelay':  5,
                     'showMsg':    1,