diff --git a/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp b/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp
index 9919eb5e58791b7b0ff766682403cf9c7c90753c..5a1188dcda1fd8eb69f89d4131faa45f9fd5fadd 100755
--- a/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp
+++ b/kernel_lite/ipc_posix/signal/SignalTestUtils.cpp
@@ -115,7 +115,7 @@ void IpcSignalTest::DefaultActionTest(const int signum, const bool expectStop, c
         }
     } else { // child
         LOGD("child start");
-        KeepRun(100);
+        KeepRun(150);
         if (expectStop) {
             LOG("Child should has been Terminated, but still alive.");
             exit(1);