Anal pruritus a common local pruritus, the onset of patients fidgeting, irritable, often can not help but scratch with their hands, anal pruritus occurs mostly in middle-aged and older people aged 20 to 40 years, less often in young people under 20 years old, and rarely occurs in children. This pruritus occurs more often in people who are used to quietness and infrequent exercise. Simple patients with anal itching can be relieved by self-prevention, but if the anal itching is constant, even with pus, redness and blood in the stool, they should go to the hospital for treatment. 1, eat more vegetables and fruits, do not eat or eat less irritating food, such as chili, strong tea, coffee, high alcohol, etc. 2, allergic people should eat less allergy-prone food, such as fish, shrimp, etc., and avoid contact with chemicals that cause allergies. 3, avoid eating and contact with allergy-prone dietary items, chemicals, pollen, raw paint, spicy and other irritating foods, and certain drugs. 4, underwear should not be too tight, too hard, it is appropriate to wear pure cotton loose fitting underwear, do not wear artificial fiber underwear, and should be washed and changed regularly. 5, keep the anus clean and dry, as far as possible every night to clean the anus. It is advisable to use lukewarm water to clean the perianal area, generally without soap, especially not with strong alkaline soap. The towels and basins used for cleaning should be dedicated to each other to avoid cross infection. 6, timely treatment of local and systemic diseases that cause anal pruritus, such as internal hemorrhoids, anal fissures, anal fistula, diarrhea, diabetes, parasitic diseases, etc. 7, pay attention to the combination of work and rest, keep a happy mood, prevent excessive tension and anxiety, do not scratch the anus, do not use too hard objects to rub the anus.