The itching of the perianal area can be triggered by excessive hygiene or very poor hygiene, the buttocks are often in a warm and humid environment, dietary intolerance and psychosocial factors, which can lead to fidgeting. The itchy farts of young patients may be related to “eating”. There are many diseases that cause perianal itching, including various rectal and anal disorders, skin diseases, contact dermatitis, infections caused by bacteria, mold or parasites, oral antibiotics, diabetes, etc., which may be triggered, including excessive hygiene or poor hygiene, buttocks often in a warm and humid environment, dietary intolerance and psychosomatic factors may also be triggers for perianal itching.” The examination found that there was no skin ulceration around the anus, no burning sensation except itching, no discharge and no other abnormalities in the anal examination except for some local red spots due to scratching, which can be judged as local eczema caused by warmth and humidity. Apply to the affected area. The skin around the anus is very delicate, if excessive cleaning can easily lead to damage; and the most common is mucus or a small amount of fecal overflow to the perianal skin, did not scrub in time, thus stimulating the perianal skin caused by eczema, this situation should stop using antibiotics, interrupt the local medication, change the diet; in addition, many young patients in the summer anal itching are with “eat In addition, many young patients with anal itching in the summer have a lot to do with “eating”, and it is recommended that people prone to anal itching should avoid fish and shrimp, spicy food, coffee, cola and other stimulating drinks in this season. The prerequisite for the treatment of perianal itching is a clear diagnosis. Therefore, patients must seek medical attention promptly after discovering the condition and cooperate with the doctor to do local and systemic examinations to see if there is any perianal skin moistening, maceration and epidermal peeling, or if there are skin herpes or papillary changes. If necessary, a parasitological examination should also be done, and it is important not to use medication blindly without understanding the situation. After determining the specific cause of perianal itching, appropriate treatment can be given. If it is eczema, the perianal area should be cleaned with a wet cotton ball after the stool, then gently dried and protected from moisture with drug-free antiseptic talcum powder, and a small cotton ball should be loosened and placed at the anal edge to keep it fresh. In severe cases or combined with other parts of the fungal infection, intravenous systemic medication can be used at the same time. If you have a history of unclean sexual intercourse, you must go to the dermatology department of a regular hospital, because sexually transmitted diseases such as condyloma acuminata and AIDS can also cause perianal and vulvar itching, so you must not delay diagnosis and treatment. There is an important reason why perianal itching should not be underestimated, and that is that in recent years it has been found that in people over 60 years of age, one of the initial symptoms of some anal canal and perianal malignant tumors is perianal itching. If the perianal skin or patches harden or form ulcers with itching, or even bleeding, pain, or discharge, the possibility of cancer should be alerted. The final diagnosis of these diseases should be made by going to a hospital for anal finger examination and pathological biopsy by a specialist, and once the diagnosis is confirmed, active treatment such as surgical excision should be taken as early as possible.