Abstract: An electric connector includes an insulating base and a plug module, and a positioning spring plate is extended from the insulating base, and the insulating base and the positioning spring plate are integrally formed. The plug module comprises a rotating shaft and a pair of conductive pins fixed to the rotating shaft, and the rotating shaft includes a polygonal block, and the rotating shaft is pivotally coupled to the insulating base, and the polygonal block and the positioning spring plate are installed corresponding to each other and abutted and positioned with a multiple of stages, such that the electric connector can have the advantages of simplified components, a low cost and a stable structure.