The ZYW series free-fall hydraulic winch consists of various distributors composed of a high-pressure shuttle valve with a one-way balance valve and control brake, CM-type hydraulic motor, Z-type brake, C-type gear reducer, drum, frame, and clutch. The built-in hydraulic valve group of this winch successfully addresses the issues of empty hook jitter and secondary slippage during lifting commonly found in general winches. Additionally, it features a clutch at the final drive stage, enabling the function of free-fall for the empty hook.