Eat less sweets, fat and spicy food, avoid alcohol, drink more water, avoid constipation, eat more fresh vegetables and fruits, do not eat acne-causing drugs; reduce exposure to acne-inducing factors (e.g. mineral oil). Young people during puberty are emotionally unstable, sensitive and easily stimulated, and they are especially concerned about their appearance, so they are extremely distressed about acne, eager to seek treatment, and often use medication indiscriminately or take inappropriate measures. Therefore, it is necessary to relieve their concerns, treat them correctly, and provide guidance on what to pay attention to in their daily lives, as well as not to use hands to squeeze the damage and use medication correctly. Follicular papules show significant lymphocytic infiltration around the hair follicle with CD3 and CD4 predominantly, part of the hair follicle wall rupture, and pustules are formed inside the hair follicle, mainly containing neutrophils, the infiltration around the hair follicle can develop into cysts, which in addition to a large number of neutrophils there are also mononuclear cells, plasma cells and foreign body giant cells, in the vicinity of the giant cells, keratin granules are commonly seen, in the healing process, the inflammatory infiltration for the fibrosis is replaced. In the process of healing, the inflammatory infiltration is replaced by fibrosis, blackheads acne contains keratinized cells, sebum and some microorganisms, in the general section due to fixation and remove lipids, only keratinized cells can be seen, the top of the acne black is caused by melanin. Acne vulgaris patient’s diet to light, easy to digest, eat more fruits and vegetables, reasonable combination of meals, pay attention to nutritional adequacy. In addition, patients also need to pay attention to avoid spicy, greasy, cold food.