The hotness in the anus may be due to inflammation of external hemorrhoids or anal fissure, which can be treated with medication or surgery under the guidance of a doctor. 1. Inflammation of external hemorrhoids: inflammation of external hemorrhoids may be due to the external hemorrhoids local blood circulation metabolism caused by strong, common symptoms of burning sensation in the anus, pain, discomfort in defecation and other symptoms, common medication erythromycin ointment, mupirocin ointment for treatment, if medication can not be relieved to consider surgical treatment, such as ultrasonic scalpel surgery or excision of external hemorrhoids. 2. anal fissure: anal fissure is an ulcer formed by the rupture of the skin of the anal canal below the dentate line, the common symptoms are pain, constipation, bleeding, common medications are methylcellulose, nitroglycerin ointment and other medications, if the effect of medication is not significant, it can also be treated by surgery, such as partial severance of the internal sphincter or fissure resection, anal dilatation therapy. It is recommended that patients avoid spicy, stimulating greasy food, to light and easy to digest diet, pay attention to personal hygiene, and develop a good dietary habits. The reason for the hot anus, in addition to the above diseases, there may be other causes of disease, such as anal abscess, sinusitis, etc., so as soon as possible to give the examination and diagnosis, to avoid delaying the condition.