diff --git a/kernel_lite/time_posix/src/AlarmTest.cpp b/kernel_lite/time_posix/src/AlarmTest.cpp
index d817fa93c59c2e68c7cdf99dacd33bf04d3dd6a1..5501d95bfa85ad2e17ce6181f05b3a0dd0856ebb 100755
--- a/kernel_lite/time_posix/src/AlarmTest.cpp
+++ b/kernel_lite/time_posix/src/AlarmTest.cpp
@@ -106,7 +106,10 @@ HWTEST_F(AlarmTest, testAlarmFork, Function | MediumTest | Level2)
         }
     } else { // parent
         Msleep(MSLEEP_TIME);
-        EXPECT_EQ(mReceivedSignal, SIGALRM);
+        if (mReceivedSignal != SIGALRM) {
+            Msleep(500);
+        }
+        EXPECT_EQ(mReceivedSignal, SIGALRM) << " expect no equal" << errno;
         WaitProcExitedOK(pid);
     }
 }