Uncontrollable bowel movement, if it is at least two or more times a day, its classified as fecal incontinence or anal incontinence. It is caused by many reasons, and clinically, it is mostly seen in the elderly or patients who are physically weak. In addition, women, especially menstruating women, are more common than men. The main causes of fecal incontinence are as follows: First, it is seen in irritable bowel syndrome, infectious diarrhea, short bowel syndrome and so on, which leads to the change of fecal character. Secondly, it is seen in neurological pathology, which is caused by abnormal rectal sensation. Third, see sphincter anatomical defect, pelvic floor muscle loss of innervation or congenital anomalies. Fourth, it is seen in rectal tumors and so on. Fecal incontinence can also occur in the elderly when cerebrovascular disease sequelae or dementia occur. Therefore, active symptomatic treatment, good cleaning and nursing care are needed.