To reduce the influence to a hand-pushing force due to the change in the loading weight of a transportation vehicle with auxiliary power.

A transportation vehicle (cart) 1 with auxiliary power is provided with load sensors 15, springs 16, and guide members 17 between the load table 3 and the base 2, and the loading weight on the load table 3 is measured by the load sensors 15. The force added to the operator's handle 6 in the directions of +e and -e is detected by a human-power detecting sensor inside the handle 6, and based on the maximum speed, acceleration, or the like of the cart previously calculated by a control part 14 in accordance with the loading weight, a driving motor 9 and a continuously variable transmission 10 are controlled to rotatingly drive a driving wheel 11 so as to assist the human power.