Mucus in the anus is seen in these cases: First, there is inflammation of the anal sinus, and repeated episodes can lead to secretions from the rectal anal canal,, also through the anus, and the patient may also have itching or pain around the anus. In severe cases, sinus inflammation can also be accompanied by fever and even induce the formation of perianal abscess. Therefore, you should keep your bowel movements regular and smooth, take a reasonable diet to treat habitual constipation or long recurrent episodes of diarrhea, and pay attention to perianal hygiene. Secondly, patients with combined hemorrhoids, including internal and external hemorrhoids, are due to the formation of varicose vein masses and even emboli formation. In severe cases there is also exudate on the mucosal surface which manifests as mucus. Usually you can also pay attention to the diet structure and choose surgery in severe cases.