The pimples around the mouth are always growing, may be caused by acne, folliculitis, herpes simplex and other factors. 1. Acne: irregular work and rest for a long time, life and work too much pressure, resulting in endocrine disorders, follicle sebaceous gland duct keratinization abnormalities, if you do not pay attention to the diet, often eat spicy and stimulating, fried food, dietary structure is unreasonable, may lead to increased sebum secretion, follicle mouth clogging, the local may appear pimples. 2. Folliculitis: if you don’t pay attention to cleanliness, the immunity of the body decreases, scratching leads to skin breakage, Staphylococcus aureus takes advantage of the situation, leading to infection of the hair follicles and the surrounding area, and pimples may appear on the side of the mouth. 3. Herpes simplex: caused by herpes simplex virus infection, clinically characterized by clustered blisters, self-limiting, but easy to recur, good around the mouth and lips, is also the main cause of acne around the mouth. It is recommended to have a regular work and rest schedule, reasonable diet, pay attention to local cleanliness and hygiene, and go to the dermatology department of the hospital if necessary.