The most common causes of vulval acne in clinical practice are: 1. The furuncle of vulva caused by local acute inflammation of vulva will cause redness, swelling, heat and pain in local areas, and suppuration in severe areas. You can take antibiotics orally, or apply erythromycin ointment or Baiduobang in local areas for treatment. During the treatment, keep the vulva clean. It is recommended to wear loose underpants, Don't eat hot, sour or irritating food. Generally, you will recover in about 5 days. 2. If the long acne is a gray cauliflower like vegetation, it is likely to be caused by condyloma acuminatum of the reproductive tract. It often has a high-risk sexual life history, manifested as pruritus of the vulva, increased local secretion, and can be transmitted through sexual contact, and can be treated by laser or surgery.