The causes of acne on men’s face may be excessive androgen levels, proliferation of Propionibacterium acnes, and abnormal keratinization of follicular sebaceous gland ducts. 1. Androgen level: If the androgen level is too high, it can promote the secretion of oil and may cause the symptoms of acne. 2. Proliferation of Propionibacterium acnes: When infected with Propionibacterium acnes infection, it can cause an inflammatory response, and under the stimulation of inflammatory factors, it can cause acne on the face. 3. Abnormal keratinization of follicular sebaceous gland ducts: If the follicular opening is over-keratinized and blocks the ducts, it may affect the discharge of shed epithelial cells and sebum, and pimples may appear. It is recommended to go to a regular hospital in time when acne appears on the face, to clarify the cause of the disease, and to carry out standardized treatment under the guidance of the doctor, so as to avoid delaying the condition.