Because there are many causes of vulvar itching, corresponding examinations should be done to clarify the causes, such as vulvar examination, secretion examination, local tissue biopsy, etc. 1.Vulvar examination: mainly check the vulva, the distribution of pubic hair and the vaginal and urethral openings, check whether there is local congestion, edema, ulcers, skin mucosa color change, vulvar skin mucosa atrophy, scratches, vaginal secretions, etc. 2.Secretion examination: The main purpose is to check the white belt routine to see if there is vaginitis. Vaginitis, such as bacterial vaginitis, mycobacterial vaginitis and non-specific vaginitis, can cause itching of vulvar skin and abnormal vaginal discharge, which can be clearly diagnosed by laboratory tests. 3.Local tissue biopsy: It is mainly to check whether there are malignant lesions. Because vulvar and vaginitis appearing vulvar itching can be ulcerated in heavy cases, if treatment according to inflammation is not effective, tissue biopsy is needed to confirm the diagnosis if necessary to decide the next step of treatment. In short, if you have vulvar itching, you need to go to the hospital to have a gynecological examination and a discharge examination to determine the cause before further treatment.