The invention relates to a double-body type case electric connector, which consists of a plug and a socket. The plug comprises a case A, a case B, an insulation base and plug brush type contact elements. The two cases are fixedly connected with each other. The flange of the insulation base is clamped with grooves formed in the case A and the case B. The plug brush type contact elements are arranged in the insulation base. The socket comprises a case, a base and socket brush type contact elements. The plug brush type contact elements and the socket brush type contact elements are uniformly arranged in a staggered manner on the two sides of the plug insulation base and the socket base correspondingly, and an airflow passage is preserved in the middle. A shielding base is arranged outside the plug insulation base. The shielding base surrounds the insulation base. After the engagement of the plug and the socket, the contact elements are positioned within the three-side surrounding of the shielding base. The connector of the invention has the advantages of simple structure, strong electromagnetic shielding effect, effective insulation of electric field and electromagnetic wave interference, and good heat radiation performance, which is applicable to special connector fixing occasions, and has stronger practicability.