The invention relates to the field of cranes, in particular to a method and device for controlling a superlift winch and a superlift winch control system. The method is used in the superlift winch control system. The superlift winch control system comprises a motor, a main valve and an unlocking oil cylinder. The motor comprises an oil inlet and an oil outlet. The superlift winch comprises a ratchet wheel and a pawl. During the groove entering control period for controlling the pawl to lock the ratchet wheel, the method comprises the steps that the main valve is controlled to supply oil to theoil inlet so as to provide pushing force used for pushing the motor to rotate, and thus the ratchet wheel is pushed to rotate; and a back pressure valve located at the oil outlet of the motor is controlled, back pressure of the back pressure valve is controlled to be a value changing from big to small during the groove entering control period, and the back pressure provides resistance for stopping the ratchet wheel from rotating. According to the method, the device and the system, the success rate and efficiency of groove entering control of the pawl can be increased and improved, and the hardware cost can also be reduced.