A light filtering assembly is installed in a lens module, including a fixed mount having a hollow part, a light filter at the hollow part, a shutter annularly disposed on the light filter, and a binding element. The hollow part is annularly formed by a support part extending from the fixed mount toward the hollow part. A first binding space is formed between the support part and the fixed mount, extending the outer periphery of the light filter and the shutter into the first binding space. An adhesive material is injected into the first binding space, and is then cooled down to form the binding element in the first binding space, so as to stop the light filter and the shutter at the hollow part as well as fix the light filter and the shutter on the fixed mount.