The present disclosure relates to the field of lens technologies and provides a lens module. The lens module includes: a lens assembly including a lens barrel and a set of lenses received in the lens barrel; and an illumination assembly fixed to the lens assembly, the illumination assembly including an illumination holder surrounding and fixed to the lens barrel and an illumination window arranged on the illumination holder. The illumination window has an annular shape and surrounds the lens assembly. The present disclosure can solve a problem in the related art that the camera and the illumination assembly are separate components, which would otherwise occupy a space.