Abstract: An electric connector structure is disclosed. The frame body thereof is integrally formed with a vertical plate and a horizontal plate which are connected with each other, and the aforementioned connector with a plurality of terminal inserting holes is formed integrally on the horizontal plate, place of the connection of horizontal plate and the vertical plate is installed with connector mounting hole, the connector mounting hole is used to mount the second connector. A notch for mounting the first connector and cause the terminal pins on the first connector is inserted into these inserting holes. Thus, the error induced from assembly is prevented.