Abstract: In order to realize real-time or quasi-real-time detection of anomalies of the earthquake precursory observation, we design a set of SMS alarm application software. The software can collect data through precursory observation devices and simply analyzes the data files to check the operation of precursor equipment. When find anomalies, the software can give an alarm for abnormal equipment via SMS. The software can grasp the working conditions of the instrument in time, effectively reduce the workload, improve the daily management of the observation station and the efficiency of instrument maintenance, and then have practical value.