The invention discloses a ship mooring device, which comprises a driving mechanism, a locking mechanism, a movable mooring rod and a shell, wherein the driving mechanism comprises a push rod and a driving unit, the shell comprises a cavity body, the cavity body comprises a limit channel, the push rod is arranged in the limit channel, and the push rod telescopically moves in the limit channel underthe driving action of the driving unit; the locking mechanism comprises a fixing pin, a fixing frame with a spring groove, and a telescopic spring limited in the spring groove, the fixing frame is fixed at one end of the push rod, close to the opening, and one end of the fixing pin is connected with one end of the spring, facing to the notch of the spring groove; the mooring rod is provided witha fixing hole, and when the locking mechanism is positioned in the limiting channel and the fixing hole, the spring is in a compressed state; when the locking mechanism passes through the limit channel and the fixing hole, the spring is in an extended state, and the distance between the farthest two points of the locking mechanism in the direction perpendicular to the length direction of the pushrod is larger than the diameter of the fixing hole. The problem that the mooring device is manually operated and labor-consuming can be solved.