Anal odor, in addition to personal hygiene factors, consider that may be related to anal and intestinal diseases, perianal eczema, chronic colitis and other factors, need to clarify the cause of the disease, symptomatic treatment. 1. Anal and intestinal diseases: if caused by hemorrhoids, hemorrhoidal surface secretions out of the anus, there may be anal odor, may also be accompanied by anal itching, dampness, secondary infection, anal discomfort. And rectal polyps, rectal prolapse, anal fistula and other anorectal diseases, will also appear such symptoms. 2. Perianal eczema: If it is caused by perianal eczema, due to sweat stimulation, secondary bacterial or fungal infection, etc., it may also cause anal odor. It is recommended to clean the anus carefully after defecation, you can use warm water to rinse around the anus to eliminate the odor, if necessary, under the guidance of a professional physician to take medication such as loratadine. And perianal viral infections, such as condyloma acuminatum, can also appear such symptoms. Need to go to the hospital dermatologic and venereal disease department. 3. Chronic colitis: if it is caused by enteritis, may also appear anal odor, usually pay attention to light diet, avoid spicy stimulation, greasy food, if necessary, you can take oral medication under the guidance of a professional physician, such as mesalazine, levofloxacin, etc., to reduce symptoms. If the symptoms of anal odor are always obvious, go to the hospital as soon as possible, usually pay attention to personal hygiene.