The circle rotates around an axis perpendicular to the diameter, with the bead inside the rotatingcircle,allowing the bead to roll in the grooves inside the ring.Dynamics analysis of beads using MATLABsimulation,the results show that when the friction coefficient p and the radius of the ring R, the greater theangular velocity ( of the rotation of the ring,the greater the maximum angular position of the bead movement.When the angular velocity w and friction coefficient p, the larger the radius of the ring , the smaller themaximum angular position of the bead movement.The characteristic time is related to the angular velocity w andthe friction coefficient u,the friction coefficient u a certain time , the larger the angular velocity o , the smallerthe characteristic time: when the angular velocity o is fixed,the greater the friction coefficient p ,the larger thecharacteristic time.