The invention discloses a DC contactor intelligent control unit which comprises a control unit, and a principal computer connected with the control unit through a RS485 receiver, and a logic unit, a signal conditioning and protection unit, a state detection and an output unit connected with the control unit, and a contactor body electrically connected with the logic unit through an output drive unit, and a sensor electrically connected with the signal conditioning and protection unit. The sensor is connected to a load. According to the DC contactor intelligent control unit of the invention, acurrent flowing through the main contact of a contactor is sampled and sent to the control unit for processing, and then, whether there is a need for protection and what kind of protection is needed are determined. Meanwhile, the principal computer and a single chip microcomputer communicate through a communication board under control, and thus, the principal computer can control the contactor andfeed back the working state of the contactor.