The invention provides a dock ship connecting device and relates to the field of docks. The dock ship connecting device comprises a machine body, the left side of the machine body is fixedly connectedwith an inclined plate, a reinforcing seat is fixedly connected between the inclined plate and the machine body, a buffer table is hinged to one end of the inclined plate away from the machine body through a connecting shaft, one side of the buffer table is movably connected with a driven wheel, the driven wheel is clamped with the buffer table through a driven gear and a driving gear which are meshed with each other, and the bottom of the inclined plate is fixedly connected with a mounting plate. The dock ship connecting device is provided with the mounting plate, a motor, the buffer table and the inclined plate, the inclined plate guides a vehicle to transport cargoes, a driving wheel is driven to rotate by the operation of the motor, the driven wheel is driven by a driving belt to rotate, and the buffer table is driven to rotate through the meshing of the driven gear and the driving gear, so that the buffer table is placed down, thereby providing intermediate support and a parkingplatform during transportation, for worker buffering or timely rest of devices and the like.