Abstract: In view of the problems of complex dynamic characteristics,relatively large load deformation,unclear drum dynamic deformation laws and others under the steel wire rope multi-layer winding state of the permanent magnet external rotor hoist system used in Yanzishan Mine of Jinneng Holding Group,the dynamic characteristics of the steel wire rope winding in the coal mine permanent magnet external rotor hoist system are studied,and a mathematical model of the multi-layer winding deformation of the steel wire rope periphery in the hoist system is established.The finite element analysis method is adopted to simulate and analyze the dynamic characteristics of the steel wire rope winding in the hoist system.The results show that as the number of periphery steel wire rope loops of the hoist drum increases,the deformation of the hoist drum under the winding effect of the steel wire rope is greatly affected by the Innermost layer steel wire rope,the outer steel wire rope exerts a certain force on the inner steel wire rope,and the equivalent stress of the drum outer wall shows a step change trend.The maximum stress value of the hoist system during the winding process is 113.14 MPa,which is smaller than the strength limit of the steel wire rope material and meets the requirements for on-site use.The research conclusion can provide theoretical reference for carring out hoist system dynamic characteristics research and structural optimization in the later stage.