The invention discloses a vehicle-mounted mobile test platform of an integrated impulse voltage generator. The vehicle-mounted mobile test platform includes a driving cab, a mobile platform of which the bottom is provided with wheels, a hydraulic device, a retractable lifting bracket, and a bottom plate which is far away from the driving cab; the bottom plate is fixedly installed at the bottom of the integrated impulse voltage generator; one end of the lifting bracket is fixed on a side edge of the mobile platform; the other end of the lifting bracket is installed on a side edge of the bottom plate; in transportation, the integrated impulse voltage generator is flatly laid on the mobile platform, and the bottom plate is vertical to the mobile platform; in test, the integrated impulse voltage generator is erected on the mobile platform, and the bottom plate is horizontally arranged on the mobile platform; and the hydraulic device controls extension and retraction of the lifting bracket so that the bottom plate can be switched between a transportation state and a testing state. With the vehicle-mounted mobile test platform adopted, the transportation of a testing device can be facilitated, and when the testing device is installed, the aid of large auxiliary equipment is not required, and an installation process is simple and fast.