The utility model discloses a tilt-up door trailer power supply which comprises a box body, a
chassis, an axle, supporting legs, an engine, a generator and a water tank, the box body is located on the
chassis, the axle is located on one side of the
chassis in the horizontal direction and connected with the box body, the supporting legs are located below the chassis, and the engine is connected with the generator. The supporting legs are connected with the chassis, and the engine, the
electric generator and the water tank are all arranged in the box body. The box body comprises a front
assembly, a rear
assembly, a left access door, a right access door and a top plate
assembly, the top plate assembly, the left access door, the right access door, the front assembly, the rear assembly and the chassis jointly define an inner space of the box body, and the engine, the generator and the water tank are all arranged in the inner space of the box body; the utility model provides an upturning door trailer power supply which is good in waterproof performance, large in exposed area of an engine and a generator after a door is opened, and good in maintenance
accessibility.