Power supply connecting device

The invention discloses the technical field of power supply connection, and particularly discloses a power supply connecting device which comprises a socket and a connecting plug. A power supply moving block is movably arranged in the socket, the power supply moving block is made of an insulating material, a conductive groove is formed in the front side of the power supply moving block, and a first conductive layer is arranged in the conductive groove; the first conductive layer is connected with a circuit through a flexible power line; the front side of the socket is provided with conductive jacks, and the conductive jacks are arranged corresponding to the conductive grooves. The connecting plug is made of an insulating material, and the rear side of the connecting plug is provided with a conductive boss corresponding to the conductive groove. A second conductive layer is arranged on the outer surface of the conductive boss; the second conductive layer is connected with a power line of an electric appliance;