The invention discloses a manufacturing method of an LED (light-emitting diode) chip with a reflector. A metal reflecting layer and a DBR reflecting layer are formed on the back side of a substrate sequentially, and light emitted by the chip from the back side is reflected to the front side of the chip to be emitted, so that the light output efficiency of the chip is improved. In addition, one metal reflecting layer is arranged between the back side of the substrate and the DBR reflecting layer, so that the problem of poor lateral reflection effect of the DBR reflecting layer is avoided and the reflection brightness is greatly improved; furthermore, the metal reflecting layer is protected by a dielectric film of the DBR reflecting layer, so that ageing of the reflecting layer in the metalreflecting layer is avoided.