The invention discloses a double-side-dump U-shaped mine car facilitating dumping. The double-side-dump U-shaped mine car facilitating dumping comprises rotation hinges, a rotation shaft, a connection ring, a shaft wheel, a chassis, a U-shaped box body, casing pipes, hinge box plates, handles, a supporting frame and a steel plate. The box plates on the two sides of the U-shaped box body are the hinge box plates and the upper portions of the hinge box plates are connected with the U-shaped box body through the rotation hinges and rotate around the rotation hinges. The steel plate in the long axis direction of the U-shaped box body is arranged at the bottom of the U-shaped box body. The rotation shaft with two L-shaped hooks at the two ends is arranged on the outer side of the lower portion of the U-shaped box body. The rotation shaft is connected with the handles arranged at the two ends of the U-shaped box body through the casing pipes arranged on the outer side of the U-shaped box body. According to the double-side-dump U-shaped mine car facilitating dumping, dumping can be freely performed on all material dumping points, bottom adhering will not occur, dumping is achieved through the self weight of materials and the transportation efficiency can be greatly improved.