Moisture and uncleanliness in the perineal area of the anus is mostly due to anal incontinence. The causes of fecal incontinence are numerous, 1 or more causes can cause fecal incontinence fecal incontinence classification method has a variety of ways, can be classified according to the degree of incontinence, the nature of the rectal sensation and etiology of the classification, but also Chinese medicine identification and typing. The prevention of moist and unclean anus perineum area need to pay attention to which points? 1, the establishment of normal dietary habits, because the occurrence of anal fistula is related to dampness and heat, for the greasy diet, can generate internal dampness and heat, so it is not advisable to eat 2, should eat more light food rich in vitamins, such as green beans, radish, winter melon and other fresh vegetables, fruits, 3, on the long-lasting fistula is mostly false evidence, dietary protein-containing foods, such as lean meat, beef, mushrooms and so on. 4, timely treatment of sinusitis, anal papillitis, to avoid the occurrence of perianal rectal abscess and fistula. 5, burning discomfort in the anus, anus falling, we must promptly find out the cause and timely treatment. 6, the prevention and treatment of constipation and diarrhea, the prevention of perirectal abscess is important, because the dry stool is easy to bruise the anal sinus, coupled with bacterial invasion and infection. Most people with diarrhea have the presence of proctitis and sinusitis, which can make the inflammation develop further. 7, active treatment, not active treatment may cause perianal rectal abscess systemic sex disease, such as ulcerative colitis, Crohn’s disease. 8, develop good defecation habits, daily defecation after the sitz bath to keep the anus clean, to prevent infection has a positive effect.