The invention relates to a trigone LED (light-emitting diode) light source manufacture method. Display elements manufactured through the method can be matched with trigone packets of various colors to assemble the LED elements of various spectrums; preamplification lens can be sheathed on the trigone packets to enlarge radiuses of scattered lights and refract colorful glows through the trigone; therefore, the display effect can be enlarged; the display light colors are increased; the display is novel; and the visual scope is enlarged. The trigone LED light source manufacture method can be broadly applied to LED light source manufacture industry.