Ground penetrating radar can detect the inner object in the wall and imaging them,such as steel,water pipe,electric wire.It has good appliction prospect.For the purpose above we developed a miniature,lowcost,portable ground penetrating radar system.And developed a software based on Android system.This software system can transmit data between software and radar.Also,it can receive the radar signal in real time and show the data in a suitable way by the operator’s choice. The signal data can be dealt with by the frequencywavenumber method.The test shows that the system has good results.The system can meet the requirement in practical engineering.