Facial and back acne is caused by the dense distribution of sebaceous glands on the face and back, which results in high sebaceous gland secretion, abnormal keratinization of hair follicle openings, and infection by Propionibacterium acnes. It can be improved through general treatment, medication and physical therapy. 1. General treatment: Pay attention to cleanliness, use neutral soap to clean the face to reduce the adhesion of oil, avoid spicy and stimulating foods, keep the bowels unimpeded and avoid staying up late. 2. Medication: Vitamin A cream can remove keratin plugs by regulating the abnormal process of epithelial keratinization in the sebaceous glands of hair follicles, thus playing a role in the treatment of face and back acne. If face and back acne is combined with bacterial infection, fusidic acid cream is often used. Oral antibiotics are one of the effective ways to treat moderate and severe face and back acne, commonly used tetracyclines such as minocycline and doxycycline. 3. Physical therapy: photodynamic therapy combined with the application of red and blue light irradiation as well as 5-amino ketoglutaric acid can destroy the face face and back acne inflammatory response through photodynamic effect. If you have a face and back acne, you need to standardize the treatment under the guidance of a doctor, do not self-medication, so as not to delay the condition.