Abstract: Disclosed is a comprehensive inspection vehicle for a subway tunnel, including a positioning system, an acquisition system and a flatcar. The flatcar runs on a railway of the subway tunnel. The positioning system and the acquisition system are arranged on the flatcar. The positioning system includes a laser ranging module and an inertial navigation module. The comprehensive inspection vehicle further includes an independent power supply system and a central control system arranged on the flatcar. The independent power supply system supplies power for the acquisition system, the positioning system and the central control system. The central control system includes an acquisition industrial computer and a positioning industrial computer which are respectively connected to the acquisition system and the positioning system.