The redness of the vulvar triangle is considered to be related to vulvovaginitis and vaginitis. 1. Vulvovaginitis: if the patient has vulvar folliculitis and other diseases, due to the local combination of bacterial infection, so the local tissue congestion and edema is obvious, so the patient will appear the performance of local skin redness, some patients can also be found in the pain of obvious small papules. 2. Vaginitis: due to the anaerobic bacteria in the vagina, mycobacteria and other pathogenic bacteria reproduce in large quantities, the local tissue inflammatory exudation increases, leukorrhea increases, which will stimulate the local skin of the vulva and the manifestation of congestion and edema. For patients with reddish vulvar triangle, it is recommended to go to the gynecology department of the regular hospital, complete the examination of leukorrhea and other related examinations, and then actively treat under the guidance of the doctor after clarifying the cause of the disease.