The invention discloses a high-strength LED chip which comprises an N-type electrode, a P-type electrode, a transparent conductive layer, a light-emitting layer and a base layer. The high-strength LED chip is characterized in that a P-type contact layer and an N-type contact layer are further included, and the transparent conductive layer, the P-type contact layer, the light-emitting layer, the N-type contact layer and the base layer are sequentially arranged from top to bottom; the P-type electrode is arranged on the top of the P-type contact layer, and the N-type electrode is arranged on the top of the N-type contact layer. The high-strength LED chip is good in structural stability, capable of being applied to the high-temperature environment, high in mechanical strength and easy to dispose and clean.