Multiple-protective self-closed safety socket

The utility model discloses an automatically-closed multi-protection safety socket in which a protection cover plate is arranged. A notch or a convex object on the protection cover plate is engaged with the outer shell of the socket. Small pits and narrow slots can be arranged on the cover plate. The partial surfaces of the protection cover plate can be oblique surfaces. If people do not obey a prescribed procedure to operate or use an object which is not similar to an ordinary plug, the socket can not be inserted. When the automatically-closed multi-protection safety socket is not used, a plug can be extracted, and a resetting device makes the cover plate automatically seal the jack. The utility model has the advantages of simple structure, high reliability, high safety and better effect.