In view of the shortcomings of the multi-tool operation measurement method and the positioning data conversion method in the baseline survey of air defense weapon system, design the automatic photoelectric baseline measuring device. According to the defined baseline measurement information, the multi-tool operation measurement method and the positioning data conversion method are analyzed respectively. According to the requirements of air defense combat and the relevant national military standards, the hardware and software structure of device is designed and verified by an example. The application results show that the device improves the information combat capability of air defense weapon system and the accuracy and rapidity of baseline measurement.