A wide-angle lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens is a convex-concave lens with negative refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The second lens is a biconcave lens with negative refractive power. The third lens is a biconvex lens with positive refractive power. The fourth lens includes a convex surface facing the object side. The fifth lens is with positive refractive power and includes a convex surface facing the image side. The sixth lens is a biconvex lens with positive refractive power. The seventh lens is a biconcave lens with negative refractive power. The eighth lens is a biconvex lens with positive refractive power.