A little swelling of the vulva is considered to be related to vulvar allergy or gynecological inflammation, etc. Common factors causing vulvar allergy include the use of gynecological lotions or sanitary napkins, or newly purchased underwear, etc. If the vulvar allergy is caused by allergens, stop contacting the vulva. If it is caused by allergies, stop contacting the allergens, wash the perineum with water, or take anti-allergy medication. If it is caused by gynecological inflammation, it is best to go to the hospital to do routine laboratory tests, according to the detection of pathogenic bacteria and drug sensitivity test, choose the appropriate drugs standardized treatment. It is best to wear loose, cotton underwear for vulvar swelling to avoid friction and prevent the vulvar mucosa from breaking. If itching occurs, you can apply glycerite to stop itching, symptomatic treatment. It is recommended to pay attention to perineal hygiene in general and change sanitary napkins diligently during menstruation.