The cause of melasma is very complex, and as far as possible, its cause should be found and appropriate treatment should be given. Among them, sun protection is the main measure to prevent and treat melasma and treatments, as far as possible, the use of broad-spectrum shading agents can improve the condition, and the specific treatment of internal regulation mainly includes oral vitamin C, vitamin E and tranexamic acid, and in severe cases, large doses of vitamin C can be used intravenously. Vitamin C can reduce dopaquinone to dopa and prevent dopa from oxidizing to dopaquinone, thus inhibiting the formation of melanin. There are also some traditional Chinese medicines that have clear efficacy on this disease, and you can treat chloasma with medicines that dredge the liver and regulate the qi, strengthen the spleen and tonify the kidney, and activate the blood circulation to remove blood stasis, such as Six-flavored Dihuang Pill, Free Pill, Ginseng Spleen Strengthening Pill, Taohong Four Substance Soup and so on, and all of them will have a clear efficacy.