Power supply socket

The utility model provides a power supply socket. The power supply socket comprises copper posts which are arranged on a socket panel. The copper posts are provided with inserting grooves which are used for tightly clamping a plug. The copper posts are utilized to substitute conventional elastic inserting reeds. Volume of the contacting copper surface between the inserting grooves of the copper posts and the plug is large so that current capable of flowing through is large. Meanwhile, relative deformation amount is small due to the large volume, and the power supply plug is tightly clamped via micro deformation of the copper posts so that wearing of the copper posts is reduced, the service life of the copper posts is prolonged, and thus the service life of the socket is prolonged.