The present disclosure provides a lens module. The lens module includes a lens barrel provided with a light through hole and defining a receiving space; a lens group having a plurality of lenses and disposed in the receiving space; and a pressing ring disposed on an image side of the lens group. The plurality of lenses has a common optical axis. The lens barrel includes an inner side surface facing the optical axis. The inner side surface is provided with a plurality of extinction structures surrounding both the pressing ring and a lens of the plurality of lenses closest to the image side. The plurality of extinction structures is arranged in sequence in a direction from the object side towards the image side. Each of the plurality of extinction structures extends from the inner side surface towards the optical axis and has a triangular cross section.