The utility model provides a clamping ring type electric connector, which resolves the technical problems that: the electric connector comprises a plug and a socket; the plug and the socket are connected and fixed via a screw thread or a neck. The defects of existing connecting mode are as follows: the screw thread or the neck should be processed with complicated technique, which leads to higher cost. In the key technical points of the utility model, the clamping ring type electric connector comprises the plug and a socket; two plug jacks are positioned on the shell body of the socket at the joint of the plug and socket; a round of groove is arranged on the shell of the plug body; a reverse U-shaped clamping ring inserts into the groove that has two plug jacks in the shell body of the socket. Therefore, the plug and the socket can be connected and fixed. The utility model has the advantages of simple structure and low cost.