Patients with itching after menstruation mainly consider two possibilities: First, vaginal inflammatory disease: If the patient is suffering from vaginal inflammatory disease, it is usually accompanied by abnormalities of leucorrhea, such as leucorrhea with fishy odor and yellow-green pus, while the patient may have local redness and swelling. Therefore, patients need to do gynecological internal examination and also take leucorrhea for laboratory tests to determine the site and type of inflammation and treat the symptoms. Second, the patient is allergic to the sanitary napkins, tampons, and other supplies used: If it is caused by allergies, the patient must first get rid of the allergens. Clean the patient’s local area and keep the patient’s local area dry. At the same time, patients can use dexamethasone and other hormonal creams applied externally to reduce the symptoms of itching.