In order to prevent dangerous explosives and the monitoring of hazardous environments, to prevent people from harm, a caterpillartype Explosive Object Detection (EOD) robot that can replace the manual operation is designed. The robot was used of two nightvision cameras to identify the path, and the handheld control terminal controlled the traveling of the vehicle body and the operation of the robot arm through wireless transmission to realize the detection of explosives in all terrain.This caterpillartype EOD robot involves the design of power supply, clock, reset, motor drive, servo steering control, speed detection, upper computer circuits and other related control software, and has characteristics of low cost, small size, low power consumption,portability and so on.