Acne on the face is mainly due to chronic inflammation of the sebaceous glands of the hair follicles caused by increased secretion of the sebaceous glands, abnormal keratinization of the hair follicle opening, overgrowth of Propionibacterium acnes and inflammatory reactions. There is no direct relationship between sun exposure and acne on the face, but it is not recommended for patients with acne on the face to sunbathe. Because the sun’s rays will cause the skin to produce more sebum, which may aggravate the acne and make it more and more frequent, so you need to pay attention to sun protection when you go out. If you are allergic to ultraviolet light not to sunbathe, it will lead to redness and itching on the face, making acne treatment more difficult. During the acne illness may take oral minocycline or doxycycline, isotretinoin and other drugs, these drugs have photosensitivity, if the sun may appear photosensitivity or appear on the face increased pigmentation, taking the above drugs need to avoid the sun. In daily life, we need to pay more attention to rest and keep the face clean and hygienic, and also in the diet should maintain a regular diet, more light food, avoid eating spicy, stimulating, fried food, such as barbecue, fried chicken, etc., avoid long-term stay up late, excessive smoking and drinking alcohol.