Multi-wheel drive trailer system

The utility model relates to a multi-wheel drive trailer system. The trailer system comprises a frame (1) connected with a vehicle head, a supporting frame (2) is arranged on the front side of the bottom of the frame (1), a steering axle (3) is arranged on the rear side of the bottom of the frame (1), and an electric driving system (5) and a trailer battery pack (4) supplying power to the electric driving system (5) are further installed at the bottom of the frame (1). The electric driving system is additionally arranged on the trailer and is matched with the pure electric trailer head for use, so that the adhesive force of the whole trailer during load transportation is effectively improved, and the dynamic property of the whole trailer is improved; a hydraulic steering axle is additionally arranged at the bottom of the frame, so that the turning radius of the whole vehicle is reduced, and the driving difficulty is reduced; a large-electric-quantity trailer head battery pack is loaded on a traction trailer h