Black pigmentation left by dermatitis can be treated clinically by both Chinese medicine and Western medicine. The main ingredients are Angelica dahurica, Rhizoma Atractylodis Macrocephalae and Rhizoma Polygonati, which are finely powdered and mixed with sesame oil, and then applied to the melanotic areas to promote local whitening and reduce pigmentation. The pigmentation of liver qi stagnation type should be treated with Danjian Yi Yao San plus reduction. In the case of hyperpigmentation caused by kidney yin deficiency, Zuo Gui Wan with reduction can be used. For hyperpigmentation with spleen deficiency and qi stagnation, Ginseng and Atractylodis Macrocephalae can be treated with addition and subtraction. In western medicine, dye laser irradiation can be applied, and hydroquinone ointment can also be applied for treatment.