Focusing ring and lens barrel module applied by same

The invention provides a focusing ring, comprising a baseplate, an external ring wall and an internal ring wall; wherein, the baseplate is in circular ring shape; the external ring wall is vertically and fixedly arranged on the outer edge of the baseplate; the internal ring wall is sleeved in the external ring wall and is fixedly arranged on the baseplate; the inner wall of the internal ring wall is provided with at least a driving part and at least an opening respectively; an elastic clip is formed in the opening by upward extension along the direction vertical to the upper surface of the baseplate. The invention also provides a lens barrel module using the focusing ring. By arranging the driving part and elastic clip on the focusing ring, the invention not only can effectively drive the lens barrel to realize focusing but also can easily dismounting the focusing ring from the lens barrel.