Provided is a lens module, including a lens barrel, a set of lenses and a light-blocking member. The set of lenses includes a first lens disposed adjacent to the light-blocking member. The first lens includes a first optical portion for imaging and a first fixing portion surrounding the first optical portion. The lens module further includes a first positioning structure configured to fix the first lens to the light-blocking member. The first positioning structure includes a first positioning part arranged on one of the first fixing portion and the light-blocking member, and a first holding part arranged in the other one of the first fixing portion and the light-blocking member; the first holding part holds the first positioning part. The lens module according to the present disclosure has an improved stability and reliability of fixation between the lens and the light-blocking member.