Itching of the vulva is common in girls for the following reasons: 1. Not changing underwear diligently, not paying attention to personal hygiene, resulting in an increase in local secretions, and the stimulation causes itching of the vulva. When attention is paid to local hygiene of the vulva, give the necessary washing, the itching will disappear. 2. When menstruation comes, the sanitary napkin is not changed diligently, menstrual blood stagnates on the sanitary napkin, resulting in local bacterial infection, causing dermatitis of the vulva, such as eczema of the vulva, inflammation of the local skin of the vulva, which can lead to vulvar itching, it is recommended to change the sanitary napkin diligently and use cotton-faced sanitary napkins. 3. Due to certain pathogenic bacterial infections This is caused by the fact that although girls do not live, they are also prone to pathogenic infections, such as Candida infections, which often cause itching of the vulva and redness and swelling of the vulva.