Patients with acne on the chest and back need to adjust their living habits, dietary habits, and medication to jointly regulate. 1. Adjust living habits: patients should pay attention to hygiene, keep bathing every day, change clothes diligently, keep the skin clean and fresh, adhere to healthy habits, avoid staying up late, aerobic exercise every day, do not squeeze the acne. 2. Adjust the diet: patients need to reduce the high sugar, high oil food intake, diet to light, eat more fresh fruits and vegetables, avoid staying up late and tired. 3. medication: patients can use vasic acid cream, adapalene gel and other drugs, if the acne inflammation is more serious, you can also use fusidic acid cream, clindamycin gel, oral minocycline, doxycycline and other drugs. 4. Physical therapy: such as the use of red and blue light, intense pulsed light for local irradiation, can also promote acne subside. Patients should use medication under the doctor’s treatment plan, not private medication, so as not to cause damage to the body.