Abstract: In order to study the optimal working parameters of the star wheel of the roadheader, dynamic simulation of the roadheader EBZ260H is carried out by using EDEM software to analyze the influence of the star wheel rotational speed and the number of teeth on coal transportation volume by the roadheader and the load of the star wheel. The results show that: with the same rotational speed, the increase in the number of teeth on the increase rate of coal transportation volume ranges from 1.48%, 18.84%, and with the same number of teeth on the increase rate of rotational speed on the increase rate of coal transportation volume ranges from 0.16%, 15.27%; with the same rotational speed, as the number of teeth of the star wheel increases, the average value of the left and right star wheel load is also higher, and the coefficient of load fluctuation also shows a tendency to increase; and with the increase in the number of teeth with the increase in star wheel rotational speed, the average value of the left and right star wheel load is also higher, and the load fluctuation coefficient shows a tendency to increase. However, with the increase of the rotational speed of the star wheel at the same number of teeth, the average value of the load and the fluctuation coefficient of the left and right star wheels do not show a significant increase. It can be seen that the impact of the number of teeth on coal transportation volume and star wheel load are greater than the impact of speed. After comprehensive consideration, the optimal working parameters of the star wheel are determined as follows: number of teeth 3, rotational speed 30 rpm, and the error between the experimental value and the simulation value is between 2.93% and 3.64%, which makes it possible to determine that there is a certain degree of feasibility of the simulation model, and provides a reference for the subsequent research related to the star wheel.