Focusing module and focusing method thereof

The invention relates to a focusing module which is set in a lens. The focusing module comprises a base, a focusing lens group frame, a driving device, a first magnetic part, a second magnetic part and a return device, wherein the focusing lens group frame can be movably arranged on the base along an optical axis of the lens, the driving device is arranged on the base and used for driving the focusing lens group frame to move, the first magnetic part is connected with the focusing lens group frame, the second magnetic part is arranged on the base and used for generating magnetic force to drive the first magnetic part, so that the focusing lens group frame is driven to rapidly move from a first position to a second position, and the return device is connected with the focusing lens group frame and used for driving the focusing lens group frame to return to the first position from the second position. In addition, the invention further provides a focusing module of the focusing module.