In the prior art, hoisting mechanisms with the hook free falling function have two structures, wherein one structure is achieved by directly adding a sleeve outside a hoisting gear box and controlling the sleeve and a reel through a clutch, and the other structure is achieved by controlling high speed gear ring of the gear box through the clutch; non of the two structures has the wire rope anti-slip function, the wire rope is easy to detach and the rope is at mess; moreover, the conventional hoisting mechanisms have the designing problems of low work efficiency, high energy consumption, incomplete and loose structure, difficulty in manufacturing, high cost, and the like. According to the invention, a dry clutch is used to directly control the reel, so as to achieve the function of hook free falling; when the free falling hook is at work, non of a planet reduction gear, a wet multi-sheet brake, and a driving hydraulic motor is at work; the high-performance hook free falling hoisting mechanism is high in efficiency, low in energy consumption, and simple in structure, realizes wire rope anti-slip and protection function by controlling through a caliper disc brake; the high-performance hook free falling hoisting mechanism solves the congenital deficits of a conventional product in aspects of scheme, structure, and technology, and can excellently meet the requirement of a user in the particular aspect of energy conservation and emission reduction.