The invention relates to a light emitting diode (LED) module, comprising a circuit board, a light emitting diode (LED) which is placed on the circuit board, and a lens which covers the LED, wherein the lens is provided with a light incident surface for the incidence of light given out from the LED, and a light emergent surface for emitting light, the light incident surface dents inward to form an aspheric surface, the light emergent surface juts outward to form a sphere, and the light emergent surface and the light incident surface which are both centrosymmetric objects have a coincident central axis. In the invention, the light incident surface of the lens is formed into the aspheric surface, the light emergent surface is formed into the sphere, the light emergent surface and the light incident surface are of central symmetry along the common central axis, the light passing through the lens can be formed into a round spot of which the edge has no bright rings, illumination effects make people comfortable, and the lens is more suitable for illumination.