A mining experimental vehicle for a cobalt-rich crust mining area on a seabed comprises a continuous track frame, a central post, propellers, a pressure compensator, an electronic bin, ore absorbing head propelling oil cylinders, an ore absorbing head fixing rack, track wheels, a hydraulic pump ore absorbing head, an underwater inverter, track wheel hydraulic motors, a milling digging head, an underwater battery, a milling digging head slide framework, a milling digging head propelling oil cylinder, a valve box, an acoustic thickness measurement probe, an underwater camera, an acoustic probe bracket, a steel cable, a pulley block, a mechanical arm, an arm folding oil cylinder, a hydraulic motor, an underwater power station and bins. According to the mining experimental vehicle, distribution characteristics of a cobalt-rich crust ore body can be tested on line in real time, the thickness of the tested ore body is acquired, the cutting and breaking depth of a mining head is adjusted, the working efficiency is increased, and the dilution ratio is reduced.