Itchy butt hole is considered to be related to perianal eczema or pinworm infection. Perianal eczema is due to the anal area of the skin moisture caused by skin infiltration and hypertrophy of the main manifestations of the delayed immune response, it is recommended that you can short-term use of Periactin and other medications to treat, and to keep the anal area clean and dry. Pinworm infection is common in children, anal itching is characterized by heavy at night, you can go to the hospital to do laboratory tests to find pinworms or eggs can be diagnosed. Secondly, if there is anal fissure, the anal area will also appear itchy and painful symptoms, it is best to go to the anorectal surgery examination. Normally, we should keep the anal area clean and dry, wash the anus in time after defecation, and don’t eat too spicy and stimulating food in daily life.