diff --git a/tests/pytest/alter/alter_cacheLastRow.py b/tests/pytest/alter/alter_cacheLastRow.py
new file mode 100644
index 0000000000000000000000000000000000000000..cd08fe4f374f9e1668d26ec863d16d28201e6523
--- /dev/null
+++ b/tests/pytest/alter/alter_cacheLastRow.py
@@ -0,0 +1,106 @@
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+from util.log import *
+from util.cases import *
+from util.sql import *
+from util.dnodes import tdDnodes
+from datetime import datetime
+
+class TDTestCase:
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+
+    def getBuildPath(self):
+        selfPath = os.path.dirname(os.path.realpath(__file__))
+
+        if ("community" in selfPath):
+            projPath = selfPath[:selfPath.find("community")]
+        else:
+            projPath = selfPath[:selfPath.find("tests")]
+
+        for root, dirs, files in os.walk(projPath):
+            if ("taosd" in files):
+                rootRealPath = os.path.dirname(os.path.realpath(root))
+                if ("packaging" not in rootRealPath):
+                    buildPath = root[:len(root) - len("/build/bin")]
+                    break
+        return buildPath
+
+    def run(self):
+        tdSql.prepare()
+        tdSql.query('show databases')
+        tdSql.checkData(0,15,0)
+        buildPath = self.getBuildPath()
+        if (buildPath == ""):
+            tdLog.exit("taosd not found!")
+        else:
+            tdLog.info("taosd found in %s" % buildPath)
+        binPath = buildPath + "/build/bin/"
+
+        os.system("%staosdemo -f tools/taosdemoAllTest/insert_100M_rows.json -y " % binPath)
+        # tdSql.query('select * from stb')
+        # tdSql.checkRows(1000*10000)
+        tdDnodes.stop(1)
+        tdDnodes.start(1)
+        tdSql.execute('use db')
+        # tdSql.query('select * from stb')
+        # tdSql.checkRows(1000*10000)
+        tableName = []
+        for i in range(500):
+            tableName.append(f"stb_{i}")
+        
+        tdSql.execute('use db')
+        lastRow_Off_start = datetime.now()
+
+        slow = 0
+        for i in range(5):        
+            for i in range(100):
+                for i in range(500):
+                    tdSql.execute(f'SELECT LAST_ROW(*) FROM {tableName[i]}')
+            lastRow_Off_end = datetime.now()
+
+            tdLog.debug(f'time used:{lastRow_Off_end-lastRow_Off_start}')
+
+            tdSql.execute('alter database db cachelast 1')
+            tdSql.query('show databases')
+            tdSql.checkData(0,15,1)
+
+            # tdDnodes.stop(1)
+            # tdDnodes.start(1)
+        
+            tdSql.execute('use db')
+            lastRow_On_start = datetime.now()
+            for i in range(100):
+                for i in range(500):
+                    tdSql.execute(f'SELECT LAST_ROW(*) FROM {tableName[i]}')
+            lastRow_On_end = datetime.now()
+                
+            tdLog.debug(f'time used:{lastRow_On_end-lastRow_On_start}')
+
+            if (lastRow_Off_end-lastRow_Off_start > lastRow_On_end-lastRow_On_start):
+                pass
+            else:
+                slow += 1
+            tdLog.debug(slow)
+        if slow > 1:
+            tdLog.exit('lastRow hot alter failed')
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
diff --git a/tests/pytest/fulltest.sh b/tests/pytest/fulltest.sh
index c93fbc5eb3803a22b7a8bc99fe420bab3fb3f0c2..69405f7106f81bfdef983696a7d26ce6510410b2 100755
--- a/tests/pytest/fulltest.sh
+++ b/tests/pytest/fulltest.sh
@@ -335,5 +335,5 @@ python3 ./test.py -f tag_lite/alter_tag.py
 python3 test.py -f tools/taosdemoAllTest/taosdemoTestInsertWithJson.py 
 python3 test.py -f tools/taosdemoAllTest/taosdemoTestQueryWithJson.py
 python3 test.py -f insert/insert_before_use_db.py
-
+python3 test.py -f alter/alter_cacheLastRow.py
 #======================p4-end===============
diff --git a/tests/pytest/tools/taosdemoAllTest/insert_5M_rows.json b/tests/pytest/tools/taosdemoAllTest/insert_5M_rows.json
new file mode 100644
index 0000000000000000000000000000000000000000..4637009ca36ef74dd445a166b5fedf782528d513
--- /dev/null
+++ b/tests/pytest/tools/taosdemoAllTest/insert_5M_rows.json
@@ -0,0 +1,60 @@
+{
+    "filetype": "insert",
+    "cfgdir": "/etc/taos",
+    "host": "127.0.0.1",
+    "port": 6030,
+    "user": "root",
+    "password": "taosdata",
+    "thread_count": 4,                   
+    "thread_count_create_tbl": 4,        
+    "result_file": "./insert_res.txt",   
+    "confirm_parameter_prompt": "no",    
+    "insert_interval": 0,         
+    "interlace_rows": 100,        
+    "num_of_records_per_req": 100,
+    "databases": [{
+        "dbinfo": {
+            "name": "db",
+            "drop": "yes",                
+            "replica": 1,
+            "days": 10,
+            "cache": 16,
+            "blocks": 8,
+            "precision": "ms",
+            "keep": 3650,
+            "minRows": 100,
+            "maxRows": 4096,
+            "comp":2,
+            "walLevel":1,
+            "cachelast":0,
+            "quorum":1,
+            "fsync":3000,
+            "update": 0
+        },
+        "super_tables": [{
+            "name": "stb",
+            "child_table_exists":"no",   
+            "childtable_count": 500,   
+            "childtable_prefix": "stb_", 
+            "auto_create_table": "no",   
+            "batch_create_tbl_num": 20,   
+            "data_source": "rand",       
+            "insert_mode": "taosc",      
+            "insert_rows": 10000,       
+            "childtable_limit": 10,      
+            "childtable_offset":100,     
+            "interlace_rows": 0,         
+            "insert_interval":0,         
+            "max_sql_len": 1024000,      
+            "disorder_ratio": 0,         
+            "disorder_range": 1000,      
+            "timestamp_step": 10,         
+            "start_timestamp": "2020-10-01 00:00:00.000",  
+            "sample_format": "csv",       
+            "sample_file": "./sample.csv",   
+            "tags_file": "",              
+            "columns": [{"type": "INT"}],
+            "tags": [{"type": "TINYINT", "count":2}]
+        }]
+    }]
+}
\ No newline at end of file