Anal sinusitis is caused by inflammatory lesions in the anal saphenous fossa at the dentate line of the anus. The anal sinus is a crypt with many openings upward in the dentate area of the anal canal, about 3-5 mm deep, and the anal glands open in it. Because the openings face upward, sometimes a dry, hard fecal mass or a foreign body in the stool damages the anal sinus, or diarrhea causes pathogenic bacteria to enter the sinus, causing the sinus to become red and inflamed, which results in anal sinusitis. Because the sinus area is rich in blood vessels and lymphatic vessels, pathogenic bacteria can easily spread, so sinusitis can easily lead to anal fistula, perianal abscess, anal fissure and other diseases. Sinusitis is usually associated with anal discomfort, a sensation of falling or foreign body, anal pain during stool or sitting, occasional discharge of a small amount of bloody discharge during defecation, anal discharge, dampness and itching. Sinusitis can be easily confused with anal fissure, but anal fissure is characterized by a long post-pooing pain and a characteristic pain cycle, while sinusitis is distinguished by short painful bowel movements, paroxysmal stabbing pain, and frequent anal discharge of mucus. Once discovered, anal sinusitis should be treated promptly. If the inflammation of the anal sinus is not treated promptly, the inflammation stimulates the intestinal secretion of mucus to stimulate the skin of the anal canal also easily leads to perianal eczema. The common treatment measures for anal sinusitis are: ① Conservative treatment: you can apply antibacterial or detoxifying Chinese medicine enemas, or hot water baths, topical anti-inflammatory creams, detoxifying Chinese medicine suppositories to the anus. Conservative treatment can reduce the symptoms and control the development, but some patients are not cured. ②Surgical treatment: surgical removal of infected anal gland tissue is the guarantee of healing. Consider surgical treatment if conservative treatment is ineffective for more than 1-3 weeks. Prevention of anal sinusitis should start with timely treatment of chronic intestinal inflammation, prevention of prolonged diarrhea, and prevention of constipation. Insisting on daily bowel movements, taking a sitz bath with warm water and washing the anus afterwards can have a positive effect on the prevention of anal sinusitis. If you feel anal discomfort, foreign body sensation and pain, you should have timely examination and early treatment, so that you can prevent small diseases from becoming big and causing other diseases to occur. For infants and young children, reduce and prevent anal sinusitis, in addition to the active treatment of hip red and infant diarrhea, it is important to change old habits, many parents in the baby after defecation, casual diapers to make the anal wipe, on the one hand, diapers are not hygienic, on the other hand, because the baby’s anal opening loose, rectum near the anal mucosa may be exposed, plus the anal local skin is delicate, cloth wipe easily cause mucosal or skin damage, thus triggering anal sinusitis or anal infection. The correct method is to rinse the anus with warm water after the baby has defecated, and then dip a sterilized soft cloth or cotton ball into the dry.