It is suggested that seborrheic dermatitis may be related to seborrhea, abnormal microorganisms, neurotransmitters, physical and climatic factors, nutritional deficiency and the role of drugs. In recent years, the relationship between pityrosporum ovatum and seborrheic dermatitis has been concerned, and it is considered that it plays an important role in the pathogenesis of seborrheic dermatitis. In addition, mental factors, eating habits, B vitamins deficiency, alcohol addiction and so on may also have a certain impact on the occurrence and development of this disease. Piyanping is not recommended. Piyanping is a hormone-containing drug, which usually hurts the skin and causes dermatitis to recur. It is suggested to use Ningfuji Kangbao Cream, a mild Chinese herbal medicine, while maintaining a happy mood and eating less greasy and spicy food.