The application discloses a bead filling device, a bead filling method, a feeding mechanism and a moving mechanism for the bead filling device, and belongs to the technical field of ball workpiece processing. The bead filling device includes a funnel, a discharge port, a connecting pipe, a clamping plate, a bearing, Support plate, first motor, fixed rod, threaded rod, second motor, bottom plate, connection block, cross bar, sleeve block, air pump, air pipe, piston rod, collar, timing module, outer rod, limit sleeve, limit rod, a third motor, a fixed plate, a baffle plate, a fixed block, an arc hole and a limit block. The baffle plate and the fixed plate can control the drop of the beads, the connecting pipe can limit the drop range of the beads, the limit rod and the piston rod are conducive to the installation and height adjustment of the funnel, the support plate can support and protect the clamping plate; the fixed rod and the cross bar are conducive to clamping The plate moves smoothly, the first motor facilitates the rotation of the workpiece, the collar and the limit sleeve can limit the position of the clamping plate, avoiding the trouble of manually rotating the workpiece, and improving work efficiency.