The invention discloses a method for monitoring system operation, and relates to the field of system safety. The method comprises the steps of after a daemon process is down, monitoring that the synchronized pid number in the configuration file becomes 0; monitoring whether the daemon process exits accidentally or not; the daemon process which exits accidentally is forced to be restarted; readingthe pid of each process in the configuration file; according to the method, a daemon process automatic record pid is an asynchronous mechanism, abnormity of each daemon process can be found in time, mutual interference is avoided, normal operation of the system is guaranteed, the state of each module of the system is monitored, system alarm and log storage can be started in one step, and a user can visually know the abnormal state of each module conveniently.