A method for manufacturing a light-emitting diode (LED) is described. The method comprises: providing a temporary substrate; forming an illuminant epitaxial structure on the temporary substrate; forming a first transparent conductive layer on the illuminant epitaxial structure; forming a metal substrate on the first transparent conductive layer; forming an adhesion layer on the metal substrate; providing a supporting substrate, wherein the supporting substrate is connected to the metal substrate by the adhesion layer; removing the temporary substrate, so as to expose a surface of the illuminant epitaxial structure; forming a second transparent conductive layer on the exposed surface of the illuminant epitaxial structure; and forming an electrode on a portion of the second transparent conductive layer.