The invention discloses a vehicle hose automatic cutting device. The vehicle hose automatic cutting device comprises a workbench, forward and backward motors are arranged at both sides of the bottom of an inner cavity of the workbench, screws are arranged at the output ends of the forward and backward motors, the surfaces of the screws are sleeved with threaded covers, connecting plates are arranged at the ends, away from the screws, of the threaded covers, slide rods are arranged at the bottom of the connecting plates, slide grooves matched with the screws are formed in both sides of the bottom of the inner cavity of the workbench, springs are arranged at the junctions of the outer sides of the connecting plates and the workbench, clamping plates are arranged at the tops of the connectingplates, the tops of the clamping plates penetrate through and extend to the top of the workbench, and a fixed plate is arranged at the top of the workbench. Through mutual cooperation of the springs,the connecting plates, the clamping plates, a cutter, a controller, the threaded covers, the screws, the forward and backward motors, the slide grooves and the slide rods, when the cutter is in use,the effect of fixedly cutting a vehicle hose is achieved, and in this way, when the vehicle hose is cut, the effect is better.