The acne on the neck is considered to be caused by endocrine dysfunction, which is related to the patient's long-term consumption of spicy and greasy food, long-term mental stress, emotional tension or often staying up late and other factors, which will lead to excessive androgen secretion in the body, thus causing acne. Therefore, we should adjust our living habits in a timely manner, keep a regular schedule, avoid staying up late, and focus on light diet.