Phellodendron Bark Lotion in gynecology is categorized into external wash, application and internal wash. Phellodendron Bark lotion is an important preparation, its role is to clear away heat and detoxification, swelling and expectoration of rot, anti-inflammatory sterilization and so on. 1. External washing: commonly used in vulvar itching, the drug will be diluted with water and directly wash the vulva, pay attention not to inject the drug into the vagina, so as not to cause vaginal flora imbalance. 2. Apply: If the vulva has localized ulcers or itching, follow the instructions for use to apply the surface, pay attention to the hygiene of the private parts. 3. Internal washing: used for vaginitis, cervicitis, pelvic inflammatory disease and other gynecological diseases auxiliary treatment, according to the instructions to decide whether to add water to dilute directly rinse the vagina. The above suggestions are for reference only, please find out the cause with the help of professional doctors, do not take medication without authorization to avoid adverse consequences.