The present disclosure discloses a lens module. The lens module includes a lens barrel and a lens group. The lens group is installed inside the lens barrel. The lens barrel includes a first barrel wall extended horizontally and a second barrel wall bended and extended from the first barrel wall. The lens module includes also a stop installed inside the lens barrel. The stop is installed inside the lens barrel and clamped between the first barrel wall and the lens group. The stop and the lens group are lined up in turn from object side to image side.