The invention discloses a plug connector control circuit. The plug connector control circuit comprises an overcurrent protection circuit, an energy conversion circuit, a primary control circuit, a secondary control circuit and an output circuit; the overcurrent protection circuit ensures that the external power supply is not affected when the current of the secondary control circuit is too high and can be automatically recovered after the abnormal condition disappears; the energy conversion circuit is configured to convert the input voltage of the external power supply to be used by a self-locking relay; the primary control circuit is configured to generate control signals by the external portion or through the manual operation to control the work of the self-locking relay; and the secondary control circuit is controlled by the primary control circuit to generate the direct current motor control signals in the plug connector to control the forward/reverse rotation of the motor to achieve plugging and separation of the plug/socket. The plug connector control circuit employs the overurrent protection circuit to avoid that the short circuit of the control circuit influences the external power supply to influence the working voltage range of the whole circuit, and the two-stage control circuits can control the forward/reverse rotation of the motor through a path of simple pulse signals to complete the plugging and separation of the plug/socket.