The invention discloses a light-emitting diode, which comprises a substrate, filling glue, fluorescent glue and gold wires, wherein the substrate is provided with a lug boss; the center of the lug boss is provided with a groove; and a LED chip is fixed in the groove. Compared with the prior art, the light-emitting diode producing a upward resistance to the filling glue, preventing the formed LED from falling off easily and improving product stability and reliability because a convex round platform of which the upper side is large and the lower side is small or the outer wall is provided the groove and pits is arranged on the substrate and the effect of embedding with one another is formed between the convex round platform and the sealed filling glue by sealing the filling glue.