The commonly known itching in the buttock eye area is what doctors describe as perianal pruritus as a disease. Generally speaking most people occur mainly due to poor hygiene, but also may be caused by some skin or other parts of the body diseases. 1, contact dermatitis is the most common cause of anal itching. Irritation of sensitive anal tissue can lead to rashes, itching and discomfort. Excessive cleaning with soap, lotion, or even laundry detergent; conversely, some people do not pay attention to personal hygiene, use unclean toilet paper or wipe unclean after a bowel movement, and do not bathe for a long time, which can also lead to itching around the anus. 2, some infectious diseases, due to local skin degeneration can also lead to anal itching. This includes sexually transmitted diseases such as gonorrhea, perianal condyloma and perianal dermatitis due to local skin degeneration can lead to anal itching. Gastrointestinal infections can lead to diarrhea, resulting in excessive wiping of tissues and stimulation of the anus can lead to perianal skin damage, resulting in skin damage causing itching painful discomfort. 3, children due to the usual lack of attention to personal hygiene, parasites can enter the intestinal tract from the mouth, host in the rectum, anus, in its activities to stimulate the anus, rectum to produce peristaltic-like anal itching discomfort. Of course, this situation is still relatively rare, thanks to the increasingly improved hygiene and health conditions. 4, anal itching can also appear in the perianal Crohn’s disease, rectal cancer and other anorectal these serious diseases, these diseases occur anal itching have a variety of factors, such as increased rectal exudation, inflammatory substances to stimulate the skin and other reasons can lead to anal itching. The ideal way to get help with anal itching is to go to the hospital and get professional help to look at these parts of the anus or rectum and check for serious illnesses through visual inspection or instrumentation.