The invention discloses a full-protection milling machine crane, which comprises an installation casing, a reducer, a beam, a guide wheel, a wire rope, a hook, a connecting rod, an adjustment spring, an adjustment rod and a limit rod. The top of the installation casing is provided with a A beam, an electric rope winding machine is installed on the top of the beam; a limit slot is symmetrically arranged on the top of the beam, and guide grooves are symmetrically opened on both sides of the limit slot, and a connecting rod is arranged in the limit slot, and is connected to the The rod is slidably connected in the limit groove, the two ends of the connecting rod respectively penetrate the corresponding side walls of the beam, and the connecting rod is slidably connected with the guide groove, a guide wheel is arranged in the limit groove, and the guide wheel is sleeved On the outside of the connecting rod, the present invention releases the limit of the limiting rod and the fixing groove through the mutual cooperation of the pull ring, the adjusting rod, the limit rod, the torsion spring, the fixed groove, the connecting rod and the adjusting spring, so that the guide The position of the wheel can be adjusted, the size of the force can be adjusted, and the work efficiency can be improved.