The causes of neck acne include Propionibacterium acnes infection, keratinization of follicular sebaceous gland ducts, high androgen levels, etc. They can be eliminated quickly with medication, physical and chemical treatments. 1. Medication: Clindamycin can kill Propionibacterium acnes; Adapalene can improve the keratinization of follicular sebaceous gland ducts; if necessary, oral doxycycline and other antibiotics can be taken, and female patients can be taken orally, such as anti-androgen drugs, such as da Vinci-35. The above drugs should be used according to the doctor’s instructions. 2. Physical therapy: Photodynamic therapy can inhibit sebum secretion, kill Propionibacterium acnes and improve sebaceous duct keratinization. 3. Chemotherapy: chemical peeling such as salicylic acid peeling can remove acne and is good for anti-inflammatory. It is recommended that people with acne on the neck go to a regular hospital in time, under the guidance of the doctor for standardized treatment.