The utility model discloses a vehicle bottom inspection vehicle. The vehicle comprises a vehicle frame and three wheels installed on the vehicle frame, the three wheels are evenly distributed on the same circumference, wheel axles of the wheels are arranged in the radial direction of the same circumference, each wheel is connected with a corresponding driver, and a vehicle bottom detection systemused for inspection is further installed on the vehicle frame; the wheel comprises two hubs arranged in parallel, a plurality of mounting grooves are evenly formed in the outer peripheries of the hubs, driven wheels are arranged in the mounting grooves, mounting shafts of the driven wheels are connected with the two inner walls of the mounting grooves, and every two adjacent driven wheels on the two hubs are arranged in a staggered mode. The utility model has the characteristics of lightness, flexibility, quickness, low cost and the like, and is convenient for large-scale use.