The invention discloses a pedal tripping device which is particularly used in the machine production and manufacturing field. The pedal tripping device is reliable in action, convenient to operate, capable of saving time and labor, and also capable of fixing and moving detection equipment quickly and accurately. The pedal tripping device comprises a fixed base and a pedal movable mechanism. The fixed base comprises a fixed platform, a clamping groove and springs. The clamping groove is formed in the fixed platform. The springs are arranged on the fixed platform. The pedal movable mechanism comprises a bearing platform, rolling wheels, a pedal plate, a pedal support, a steel wire, a hook support and a hook. The rolling wheels are arranged at the bottom of the bearing platform. The pedal support and the hook support are arranged at the two ends of the bearing platform correspondingly. By the adoption of single-person pedaling, the process only needs to be operated by one single person. Moreover, locking and tripping processes are quick and accurate, operation is convenient, time and labor are saved, and the detection equipment can be fixed and moved conveniently.