The invention relates to a support platform of a mobile operation vehicle. The support platform comprises a support plate, wherein the two sides of the lower surface of the support plate are fixedly connected with support beams; the support beams are glidingly connected with a plurality of support seats; the support seats are fixedly connected with the bottom surface of a carriage; each support beam comprises a support rod fixedly connected with the support plate and a slide rod glidingly connected with the support seats; the slide rods are welded and fixedly connected with the support rods; the front end of the upper surface of the support plate is provided with a slide groove; a barrier strip is glidingly arranged in the slide groove; the two sides of the support plate are provided with downwards bent and folded side baffle plates; the side surface of each support seat is provided with an upwards folded and bent stop block; and the side baffle plates are positioned at the inner sides of the stop blocks and are partially overlapped with the stop blocks. The support platform has the advantages that the structure is simple; a drawer type moving platform is used, so that light-weight mechanical equipment can be fast unloaded from the vehicle, and high speed and convenience are achieved; the structures of the barrier strip, the baffle plates and the stop blocks are used, and loaded equipment is prevented from moving in the transportation process, so that safety and reliability are achieved, and the defects of time waste, labor waste and the like of the existing unloading method and transportation are overcome.