An electrical distribution center includes a housing, an electronic device, an upper fixing member, a printed circuit board (PCB), a lower fixing member and a connector. The upper fixing member has a first inserting hole. Pin terminals of the electronic device pass through the first inserting hole and are connected to the PCB. A connector mounting slot for fixing the connector is arranged on the lower fixing member. A second inserting hole and a guide rod member are arranged in the connector mounting slot. A TPA member is sheathed on the guide rod member. The TPA member has a third inserting hole. Pin terminals of the connector pass through the third inserting hole and the second inserting hole and are fixed in the connector mounting slot with the TPA member. The pin terminals of the connector are connected to the PCB after passing through the first inserting hole.