There are more reasons for women to have itchy labia majora, which may be due to physiological factors or pathological factors such as mycosis fungoides, trichomonas vaginitis, bacterial vaginosis, and senile vaginitis, and the cause should be clarified and treated for the right reason. I. Physiological factors may cause itching of the labia majora if the patient does not pay attention to perineal hygiene or has unclean sex. In daily life, attention should be paid to maintaining personal hygiene, washing the vulva regularly, changing underwear regularly, keeping the perineum clean and dry. Second, pathological factors 1, mycotic vaginitis: mycotic vaginitis caused by Pseudomonas can lead to itching of the labia, and itching symptoms are sometimes light and sometimes heavy, itching is severe when sitting and lying down, inflammation may also occur when the heavier painful urination, painful intercourse, etc.. Patients can use clotrimazole vaginal suppositories for vaginal administration and wash the vulva with baking soda before use to effectively relieve the symptoms. 2. Trichomoniasis: Patients with trichomoniasis may experience itching of the labia majora with yellow-green vaginal discharge, and should follow medical advice to use cleanser to wash the vulva and metronidazole effervescent tablets to be inserted into the vagina for treatment. 3. This leads to itching of the labia majora with fishy vaginal discharge. Patients can use potassium permanganate to clean the vulva and then use metronidazole suppositories vaginally or metronidazole tablets orally to relieve the symptoms effectively; 4. You can wash with water and then apply anti-itch ointment under the guidance of a doctor, and dry the water before applying the medicine.