Long-term small stools are considered to be hemorrhoids, rectal polyps and rectal tumors and other diseases, can be treated with topical drugs and surgery. 1. Hemorrhoids: the cause of the disease is not clear, and is considered to be related to the anal cushion and varicose veins, there will be perianal itching, pain, etc., which can cause long-term small stool, you can follow the doctor’s instructions to apply anus tai ointment, skin hemorrhoidal ointment ointment and other ointment treatment, serious cases need to be treated by hemorrhoidectomy. 2. Rectal polyps: the development of rectal polyps and lifestyle, genetic factors have a certain relationship, the main symptoms manifested as blood in the stool, polyp prolapse, as well as after the acute and heavy, etc., when the larger polyps caused by narrowing of the intestinal lumen, it can lead to long-term small stools, can be treated by enteroscopic polypectomy. 3. Rectal tumor: Due to the continuous growth of tumor, it can cause local narrowing of rectal lumen, which leads to the change of shape of feces and thinning of stool in the process of discharging. Surgical resection or combined immunotargeted therapy is usually adopted. Long-term small stools may also be caused by perianal abscess, anal papilloma and other diseases, it is recommended to consult a doctor in time, improve the colonoscopy and other tests to clarify the cause of the disease, and give appropriate treatment.