Oily skin is related to living habits, heredity, seborrheic dermatitis, acne and other factors, which can be improved by adjusting dietary habits, strengthening skin care, and using medication. 1. Adjust dietary habits: often eat greasy food, such as fried chicken, fatty meat, spicy hot, or often stay up late, will promote sebaceous gland secretion, so that the skin is oily. Should try to eat a light diet, reduce the intake of fried greasy and other stimulating foods, regular work and rest, to ensure adequate sleep. 2. Strengthen skin care: try to choose to use a mild non-irritating cleanser to clean the skin, so that the excess oil in the pores clean, to avoid clogging of the pores. After cleansing, you can use skin care products to shrink pores, which can effectively control oil and keep the face dry. 3. Use of drugs: seborrheic dermatitis, acne, there is chronic inflammation of the skin, will stimulate the sebaceous glands to increase secretion, which is manifested as a lot of oil, you can follow the doctor’s instructions for the external use of azelaic acid, retinol cream and other medications, oral B vitamins, etc., can inhibit the secretion of sebum and reduce the symptoms of oil. It is recommended that patients with oily skin go to the dermatology department of the hospital in a timely manner, and standardize the treatment under the guidance of the doctor.