Seborrheic dermatitis is a chronic inflammation of the skin that occurs at the site of seborrhea. The pathogenesis is unclear and may be related to immune, genetic, androgenic, psychiatric, environmental factors and infection by certain microorganisms such as Malassezia. There is a certain possibility of cure for seborrheic dermatitis scalp area, but some patients will have recurrent attacks. The goal of treatment is to control the lesions, reduce seborrhea, restore the scalp to its normal state and reduce recurrence. It is usually treated with drugs and combined with scientific daily care. A, drug treatment 1, topical drugs: choose some shampoos containing special ingredients, such as shampoos containing tar, zinc pyrithione, or use compound sulfur shampoo, selenium disulfide or ketoconazole shampoo, combined with fungal infections can choose bifenazole solution, etc.; 2, oral drugs: such as B vitamins, and antibiotics such as tetracyclines, erythromycin, etc., for anti-infection treatment. Antihistamines, such as loratadine, can also be used for antipruritic sedation. And when the scope is larger and the inflammation is obvious, you can use glucocorticoids, such as methylprednisolone, prednisone, dexamethasone, etc. You can also take isotretinoin to help reduce the oil secretion. Second, daily care to avoid the use of hairspray, dye and other hair products or irritating shampoo products, regular cleaning with warm water and mild shampoo products, and avoid washing hair perm and scratching. In terms of diet, pay attention to eat more vegetables and fruits, reduce the consumption of high-fat and sugar diet, avoid drinking alcohol and spicy and stimulating food. At the same time, pay attention to maintain sufficient sleep, avoid staying up late, so as not to promote the scalp secretion of oil, aggravating the disease.