The invention discloses a novel power supply facility. The novel power supply facility comprises a plug socket fixedly mounted in a wall and a plug head connected with a power consumption apparatus via an electric wire, wherein the plug socket is provided with a sliding chamber which opens to the right, a sliding block is mounted in the sliding chamber in a sliding way, plugging grooves which opento the right are vertically symmetrically arranged in the sliding block, first elastic electric conduction sheets are mounted in the plugging grooves, a power supply block is fixedly arranged on a left end face of the sliding block, a power supply groove matched with the power supply block is arranged in a left end wall of the sliding chamber, telescoping grooves that extend up and down are symmetrically arranged in upper and lower end walls of the sliding chamber, and sliding arms are mounted in the telescoping grooves in a sliding manner; second elastic electric conduction sheets are fixedly mounted on end faces, positioned away from the sliding chamber, of the sliding arms; third elastic electric conduction sheets opposite to the second elastic electric conduction sheets are mounted inthe telescoping grooves, electric conduction arms matched with the plugging grooves are symmetrically arranged on an upper part and a lower part of a left end of the plug head, a lengthwise groove ofwhich an upper end and a lower end are communicated with each other is arranged in the plug head, and a horizontal groove which opens to the left and runs through the lengthwise groove is arranged inthe plug head.