diff --git a/src/services/syssentry/syssentry.py b/src/services/syssentry/syssentry.py
index def3ed71760135978230c6bb3618eaf9594d383f..4c46076593591772e212388213dc0ddcb341a4c8 100644
--- a/src/services/syssentry/syssentry.py
+++ b/src/services/syssentry/syssentry.py
@@ -560,25 +560,22 @@ def sigchld_handler(signum, _f):
     """
     while True:
         try:
-            child_pid, child_exit_code = os.waitpid(-1, os.WNOHANG)
+            child_pid, child_exit_status = os.waitpid(-1, os.WNOHANG)
             logging.debug("sigchld pid :%d", child_pid)
             task = get_task_by_pid(child_pid)
             if not task:
                 logging.debug("pid %d cannot find task, ignore", child_pid)
                 break
             logging.debug("task name %s", task.name)
-            if os.WIFEXITED(child_exit_code):
-                # exit normally with exit() syscall
+            if os.waitstatus_to_exitcode(child_exit_status) == 0:
+                # exit normally with exit(0) or return 0
                 if task.type == "PERIOD" and task.period_enabled:
                     set_runtime_status(task.name, "WAITING")
                 else:
                     set_runtime_status(task.name, "EXITED")
             else:
-                # exit abnormally
-                if not task.period_enabled:
-                    set_runtime_status(task.name, "EXITED")
-                else:
-                    set_runtime_status(task.name, "FAILED")
+                # exit abnormally exit(!0) or terminated by a signal
+                set_runtime_status(task.name, "FAILED")
             task.result_info["end_time"] = get_current_time_string()
         except:
             break