Abstract: In this paper,the working principle and characteristic of Georobot are briefly introduced,and then its application to deformation monitoring system is mainly studied.A main frame of the deformation monitoring system based on Georobot is presented and the corresponding software is designed.A special method which can effectively improve the monitoring precision of the system is applied in the data processing.The whole Georobot deformation monitoring system consists of base station(Georobot station),reference points,target points,computer and software.The software in VB environment mainly comprises the following functional modules:project managing,system initializing,learning measure,data querying,data processing and results outputting.Lastly,two experiments have been conducted by the Georobot deformation monitoring system which is developed by the authors.The result of the experiments proves that the Georobot deformation monitoring system has several advantages,such as high efficiency,high automation,real-time,high precision etc.