The invention relates to a powder coating with a low-temperature curing function. The powder coating comprises the following components in percentage by weight: 40-60 percent of unsaturated polyester resin, 20-25 percent of epoxy resin, 1-5 percent of photosensitizer, 0.5-1.5 percent of flatting agent, 0.1-1 percent of defoaming agent, 15-25 percent of filler, 8-15 percent of transparent iron oxide pigment and 0.1-0.5 percent of white carbon black. The powder coating with alow-temperature curing function is high in transparency, bright in color and low in curing temperature; when the powder coating is sprayed, the powder coating is preheated to 50-70 DEG C and maintained at the temperature for 5-8min, then subjected to electrostatic spraying, blown by hot air with the temperature being about 120 DEG C for 20min and then naturally cooled; and the powder coating is suitable for coating of wooden materials.