Acne on the face, also known as acne, is usually caused by a variety of reasons such as endocrine disorders, excessive proliferation of Propionibacterium acnes, seasonal changes and digestive system diseases. In addition, it is related to the patient’s lack of attention to facial cleanliness. Therefore, after the appearance of acne, in addition to finding the relevant causes, it is also necessary to pay attention to facial cleanliness. After the appearance of acne, consider the following possibilities: 1. Endocrine disorders: Frequent late nights, lack of sleep, excessive stress, emotional instability and other reasons can easily lead to endocrine disorders, or hormonal secretion in the body during puberty, which at this time can lead to a high level of oil secretion in the skin, prone to acne. In addition, the frequent use of certain diet pills, birth control pills and other drugs can also stimulate the body, which can also cause endocrine imbalance and acne; 2, excessive proliferation of Propionibacterium acnes: oily skin is prone to acne, if you do not usually pay attention to cleansing, the pores are clogged and Propionibacterium acnes overproliferates, acne will appear; 3, seasonal changes: the temperature difference is greater when the seasons change, and people with sensitive skin are prone to discomfort, which will lead to the appearance of acne; 4. Digestive system diseases: Patients with larger stomach fires or with chronic diarrhea, stomach ulcers, excessive acid secretion, constipation and other gastrointestinal system diseases usually have acne around their lips. After acne on the face, in addition to improving by changing bad habits, paying attention to a balanced diet, eating less spicy and stimulating food, eating more fruits and vegetables, and using skin care products in a reasonable way, medication can be taken if necessary, such as vitamin A acid drugs, zinc licorice capsules, tetracycline tablets, etc.