Damp and itchy anus need to be treated according to the specific situation, mostly caused by perianal eczema, ringworm, perianal abscess and other diseases, which need to be treated under the guidance of the doctor. 1. Perianal eczema: moist and itchy anus is common in perianal eczema. Patients need to keep the local dry, clean, avoid scratching, under the guidance of the doctor external mometasone furoate cream and other glucocorticoid ointment, oral loratadine and other antihistamines anti-allergy, anti-itch treatment. 2. Ringworm: Itchy moist anus may also be localized skin fungal infection caused by ringworm. Patients need to keep the local dry and clean, under the guidance of the doctor to use miconazole cream, terbinafine hydrochloride cream and other antifungal drugs, to relieve anal moisture, itching and other abnormal symptoms; when the symptoms are serious, can follow the doctor’s instructions oral itraconazole and other antifungal drugs. 3. Perianal abscess: patients with perianal abscess may also have anal moisture and itching, usually accompanied by different degrees of perianal swelling. You can use warm water or diluted potassium permanganate solution for sitz bath under the guidance of the doctor, and at the same time, after a detailed examination, follow the doctor’s instructions for surgical treatment. It is recommended that patients with itchy and moist anus should go to the doctor for relevant examinations in a timely manner, and according to the examination results, actively cooperate with the doctor for treatment to avoid further development of the condition.