The itchy anus with what ointment depends on the disease causing the itchy anus, generally there are three possibilities: 1, hemorrhoids, mainly due to hemorrhoid shedding, resulting in persistent mucus in the rectum to stimulate the skin around the anus, thus causing chronic inflammatory changes in the skin around the anus, can be given 1:5000 potassium permanganate warm water sitz bath, apply Pepto Bismol ointment and local application of Ma Yinglong hemorrhoid cream or hemorrhoid plugs in the anus. 2, perianal eczema, an allergic non-infectious disease of the skin around the anus, the clinical manifestations of which may be accompanied by symmetric rash formation, The clinical manifestations of perianal eczema, an allergic non-infectious disease of the skin around the anus, can be accompanied by symmetrical rash formation in addition to anal itching, which can be disinfected with vital iodine and then applied to the affected area with Perisone ointment and, if necessary, oral anti-allergy drugs for symptomatic treatment, such as Keratan. 3. parasitic infections are mostly raphe infections, which can be taken orally and applied locally to the anus with Furfurac® lotion.