diff --git a/tests/system-test/0-others/splitVGroup.py b/tests/system-test/0-others/splitVGroup.py
index 9fd00892e4..ed80505ce2 100644
--- a/tests/system-test/0-others/splitVGroup.py
+++ b/tests/system-test/0-others/splitVGroup.py
@@ -198,7 +198,7 @@ class TDTestCase:
 
     # init
     def init(self, conn, logSql, replicaVar=1):
-        seed = time.clock_gettime(time.CLOCK_REALTIME)
+        seed = time.time() % 10000
         random.seed(seed)
         self.replicaVar = int(replicaVar)
         tdLog.debug(f"start to excute {__file__}")
diff --git a/tests/system-test/0-others/timeRangeWise.py b/tests/system-test/0-others/timeRangeWise.py
index a7dc18aa82..5ef5aa4a75 100644
--- a/tests/system-test/0-others/timeRangeWise.py
+++ b/tests/system-test/0-others/timeRangeWise.py
@@ -210,7 +210,7 @@ class TDTestCase:
 
     # init
     def init(self, conn, logSql, replicaVar=1):
-        seed = time.clock_gettime(time.CLOCK_REALTIME)
+        seed = time.time() % 10000
         random.seed(seed)
         self.replicaVar = int(replicaVar)
         tdLog.debug(f"start to excute {__file__}")
diff --git a/tests/system-test/1-insert/precisionUS.py b/tests/system-test/1-insert/precisionUS.py
index 1b41d66010..d634149297 100644
--- a/tests/system-test/1-insert/precisionUS.py
+++ b/tests/system-test/1-insert/precisionUS.py
@@ -220,7 +220,7 @@ class TDTestCase:
 
     # init
     def init(self, conn, logSql, replicaVar=1):
-        seed = time.clock_gettime(time.CLOCK_REALTIME)
+        seed = time.time() % 10000
         random.seed(seed)
         self.replicaVar = int(replicaVar)
         tdLog.debug(f"start to excute {__file__}")
diff --git a/tests/system-test/2-query/orderBy.py b/tests/system-test/2-query/orderBy.py
index fed1651b3a..fa447cbca4 100644
--- a/tests/system-test/2-query/orderBy.py
+++ b/tests/system-test/2-query/orderBy.py
@@ -220,7 +220,7 @@ class TDTestCase:
 
     # init
     def init(self, conn, logSql, replicaVar=1):
-        seed = time.clock_gettime(time.CLOCK_REALTIME)
+        seed = time.time() % 10000
         random.seed(seed)
         self.replicaVar = int(replicaVar)
         tdLog.debug(f"start to excute {__file__}")
diff --git a/tests/system-test/2-query/smaBasic.py b/tests/system-test/2-query/smaBasic.py
index c221a70605..a82d190e2b 100644
--- a/tests/system-test/2-query/smaBasic.py
+++ b/tests/system-test/2-query/smaBasic.py
@@ -269,7 +269,7 @@ class TDTestCase:
 
     # init
     def init(self, conn, logSql, replicaVar=1):
-        seed = time.clock_gettime(time.CLOCK_REALTIME)
+        seed = time.time() % 10000
         random.seed(seed)
         self.replicaVar = int(replicaVar)
         tdLog.debug(f"start to excute {__file__}")