The invention relates to the technical field of robots and provides a comprehensive pipe gallery inspection robot. The comprehensive pipe gallery inspection robot mainly comprises metal wheels, a motor, a speed reducing box rubber cushion, a motor fixing plate, an oil seal end cover rubber cushion, an oil seal end cover, a motor fixing plate rubber cushion, a middle box body connection plate and a robot whole circuit, wherein the motor is connected with a speed reducing box through a screw; the speed reducing box, the speed reducing box rubber cushion, the motor fixing plate, the oil seal end cover rubber cushion and the oil seal end cover are connected in sequence through screws and nuts; the oil seal end cover is connected with an oil seal through tight matching; and the metal wheel is connected with an output shaft of the speed reducing box through tight matching. The comprehensive pipe gallery inspection robot provided by the invention takes a wireless network bridge as a communication mode, and a communication distance of the robot in a comprehensive pipe gallery is extremely improved. A plurality of types of gas sensors are used so that the concentration of various types of gas in the comprehensive pipe gallery can be monitored in real time, and safety guarantees are provided for workers who enter a cable tunnel to repair. Furthermore, a low-delaying camera is adopted, so that the real-time operation capability of operators is guaranteed, the operability is improved, and accidents are prevented.