The burning pain under the buttocks may be caused by local infections, trauma, eczema, anal diseases and so on. 1. Infection: the skin and mucous membranes under the buttocks are infected by external bacteria, viruses, fungi and other pathogenic bacteria, or the formation of boils, carbuncles or subcutaneous abscesses, which may cause the symptoms of hot pain under the buttocks. 2. Trauma: local skin is extruded by external forces, or scratches caused by skin breakage, bruising, edema and other phenomena, may also cause the symptoms of hot pain under the buttocks. 3. Eczema: the specific pathogenesis is not known, may be related to autoimmune, external stimuli, may also cause symptoms of hot pain under the buttocks. 4. Anal and intestinal diseases: a variety of anal and intestinal diseases, such as hemorrhoids, sinusitis, perianal abscess, proctitis, etc., may lead to hot pain under the buttocks. Hot pain under the buttocks, there may be other reasons, it is recommended to go to the hospital in time to check, clear cause and follow the doctor’s instructions for treatment.