Acne is usually referred to as acne. Acne on the jaw is usually caused by endocrine disorders, dietary habits, abnormal keratinization of follicle openings and other reasons. 1. Endocrine disorders: If the patient suffers from endocrine disorders, it may lead to disorders of androgen levels in the body, which will make the sebaceous glands function vigorously and secrete a large amount of oil, which, when clogging the pores, will lead to the symptom of acne on the jaws of the patient. 2. Dietary habits: If the patient often eats high sugar, dairy products, greasy and spicy food in daily life, it will also lead to exuberant secretion of sebaceous glands. 3. Abnormal keratinization of hair follicle openings: make the hair follicle openings smaller, narrower, blocked, etc., which will prevent sebum from being discharged, thus forming the condition of acne on the jaw. When the patient jaw acne, need to timely under the guidance of the doctor, choose the appropriate medication to treat the symptoms, so as not to delay the condition lead to aggravation of the condition.