To provide a single-wheel hand carrier with an electric motor capable of keeping a lateral balance in the forward movement operation of the device and remarkably reducing a manual operation labor even when loads are stacked highly or a heavy load is carried.

A holding lever 40 is slidably engaged with a handle at one end side of a body frame 12 allowing a load placing part 16 having a handle 14 fitted to one end to be mounted thereon. Since the electric motor 22 is started by the forward pushing operation of the holding lever 40 in a held state, labor for press-moving the entire device is almost not required. Thus, a worker can easily carry a mounted load with only the lateral balance taken into account.