Swollen and itchy labia may be caused by improper clothing or allergies, vulvodynia, vaginitis, etc. The causes need to be determined and dealt with according to the specific circumstances: 1. Improper clothing or allergies: tight underwear or chemical fiber underwear stimulation, or allergy to semen, prone to swollen and itchy labia and other performance. It is recommended to wash the vulva in time, wear cotton loose underwear, necessary oral anti-allergy drugs for treatment; 2, vulvovaginitis: the main manifestations of vulvar skin mucosa swelling, itching, pain, a burning sensation. The symptoms can be improved by taking a sitz bath, oral antibiotics, physical therapy, etc. Sexual intercourse is prohibited during treatment. It is recommended to go to the hospital, perform gynecological examination and routine examination of the white belt, and carry out treatment according to the type of vaginitis, which can be treated by topical vaginal drugs, such as various vaginal suppositories, as well as oral anti-inflammatory drugs to relieve the symptoms of vulvar swelling and itching. Take a light diet in daily life and exercise properly to improve the body immunity. Pay attention to personal hygiene, change underwear regularly, avoid vaginal medication during menstruation and avoid intercourse to avoid aggravating the inflammation.