The causes of red spots on the vulva are as follows: 1, the most common cause is due to skin allergies; 2, due to vulvar diseases, the most common vulvar diseases are vulvar skin hyperplasia, skin sclerosis and folliculitis, which need to be diagnosed according to the presence or absence of itching, local skin hyperplasia, hardening, thinning, and the presence or absence of local redness, swelling, pain and pain; 3, less common is due to sexually transmitted diseases and It is necessary to further clarify according to the presence of high-risk sexual behavior and related examination. You can temporarily observe, but you need to pay attention to keep the local cleanliness and hygiene, avoid scratching the skin with your hands, avoid contact with allergic substances, try to use water for local cleaning, avoid using vulva cleansers containing irritating ingredients to prevent aggravation of the disease, pay attention to changing underwear regularly, avoid sexual intercourse to prevent infection of sexual partners.