External electric type electric foldable clothes hanger and clothes hanger opening and closing method

The invention discloses an external electric type electric foldable clothes hanger and a clothes hanger opening and closing method. The clothes hanger comprises a clothes hanger body and a moving arm provided with a direct-current power supply interface. The clothes hanger comprises a fixed base part and two supporting arms rotationally connected to the two sides of the fixed base part, and the fixed base part is provided with a direct-current gear motor, a transmission assembly and a direct-current input interface connected with the direct-current gear motor. The direct-current gear motor drives the supporting arms to be unfolded and folded synchronously through the transmission assembly. The direct-current power supply interface is in butt joint with a direct-current input interface on the clothes hanger, power is supplied to the direct-current gear motor, and the direct-current gear motor rotates forwards or backwards by switching the positive electrode and the negative electrode of an external power sourc