Method for manufacturing LED chip capable of improving light-giving efficiency

The invention discloses a manufacturing method of an LED chip capable of enhancing light extraction efficiency. The method comprises the following steps: the first step. scribing the LED chip to a substrate; the second step. extending the scribed chip with an extending process; the third step. preparing NaCLO etching solution with NaCLO solution and water at a volume ratio between 1:9 and 1:18 and the PH value of which is 4-7; and the fourth step. spraying the extended chip with the NaCLO etching solution. The method mainly relates to roughening treatment of the chip side to cause light to be refracted from the inside, thus improving the light extraction efficiency.