Ship mooring device capable of quickly tightening mooring rope

The ship mooring device comprises a base, a storage groove is formed in the outer side wall of the base, a connecting groove is formed in the side wall of the inner top end of the storage groove, a rotating rod is rotationally connected to the side wall of the inner top end of the connecting groove, a worm wheel is fixedly connected to the rotating rod in a sleeved mode, and the worm wheel is fixedly connected to the base in a sleeved mode. A worm meshed with the worm gear is arranged in the connecting groove, a mounting groove is formed in the side wall of the top end in the storage groove, a servo motor is fixedly connected to the inner side wall of the mounting groove, one end of the worm is rotationally connected with the inner side wall of the connecting groove, and the other end of the worm penetrates through the base and is fixedly connected with the tail end of an output shaft of the servo motor; the worm is rotationally connected with the base, and a winding and unwinding roller is arranged in the st