The itching of the vulva after childbirth is mainly caused by the following reasons: 1. inflammatory reactions, such as improper care leading to vulvar inflammation or vaginal inflammation, causing secretion stimulation resulting in local itching of the vulva, in the vulva local may also appear red and swollen phenomenon, it is recommended to actively check the secretions and then give anti-inflammatory treatment. 2. caused by allergies, one is drug allergy, the other is sanitary napkin allergy. The reason for this is that when caring for the vulva, the iodophor or other disinfectant used causes localized allergy to the vulva and causes itching. In addition, the sanitary napkin used may also cause allergies, causing itching, this time the itch is more clearly defined, you can apply local anti-allergy drugs to give the appropriate treatment to achieve the purpose of stopping itching.