Most of the itching down there is caused by trichomoniasis, mycotic vaginitis, various pathogenic infections of the vulva, allergies and many other factors. Never scratch and break it with your hands to avoid inflammatory infections. If the vulva is itchy, you can apply glyburide lotion on the affected area to relieve the symptoms; if it is itchy inside the vagina, you can use metronidazole suppositories or clotrimazole suppositories vaginally, which can generally relieve the symptoms. Wash your vulva with water, wear cotton underwear and keep your pubic area clean and hygienic. Go to the gynecology department of a regular public hospital for examination and diagnosis to identify the cause of the problem, and take appropriate medication and symptomatic treatment by a specialist to avoid delaying the condition and aggravating it. Avoid getting cold and overwork, avoid mental tension, drink more water, eat a light diet, eat more vegetables and fruits, and avoid spicy, fishy and other stimulating foods.