The invention discloses a dune electric trolley with a traction control system, and the electric trolley is composed of a frame, a wheel-speed acquisition system, a vehicle-speed acquisition system, an acceleration acquisition system, a traction control system and a power-supply system, wherein the vehicle-speed acquisition system comprises a No.4 photoelectric encoder, a fifth wheel mechanism and a single-chip microcomputer; the fifth wheel mechanism comprises a right-angle connection plate, a right-angle fixed plate, a pressure spring and a fifth wheel; the right-angle connection plate is composed of a No.1 right-angle plate and a No.2 right-angle plate; and one end of the No.2 right-angle plate is hinged with the rear end of a bottom plate in the frame, the No.4 photoelectric encoder is fixed on the right-side surface of the No.1 right-angle plate, the fifth wheel at the left side of the No.1 right-angle plate is fixed on the input shaft of the No.4 photoelectric encoder, one wallboard of the right-angle fixed plate is vertically fixed on the bottom plate in the frame in front of the right-angle connection plate, a compression spring is fixed between the other wallboard of the right-angle fixed plate and the No.2 right-angle plate, and a No.1 pin of the No.4 photoelectric encoder is electrically connected with a PT3 pin of the single-chip microcomputer.