Aiming at the problem of windlass running deviation and serious wear of its track system, taking MB670-1 windlass as the object, and taking 5-2 coal seam of a coal mine as the background, the motion analysis model of the windlass is established, and the detailed description of the windlass track system and the roadway floor is carried out using the multi-body dynamics theory and discrete element theory, Finally, the DEM-MBD coupling method is used to analyze the movement state of the roadheader and the mechanical characteristics of its track system during the driving process of the roadway floor. The research results show that the driving state of the windlass on the roadway floor is good, with the average longitudinal slip rate of 19%, the maximum vertical settlement of 20.2 mm, and the maximum lateral displacement of 20.2 mm; The tension force of the track shoe under the bearing wheel increases with the torque of the driving wheel, and the tension force of the track shoe at other positions is basically unchanged; In the track system, the driving wheel receives the largest load, with an average value of 129.6kN; The load bearing wheel located under the machine head is the largest, with an average value of 78kN; The tug wheel at the middle and rear of the fuselage bears the maximum load of 5.7kN. The research results provide a basis for improving the reliability and stability control of the windlass.