Functional constipation, colorectal tumors, enteritis and other common causes, should be based on the cause of the disease, the cause of treatment. 1. Functional constipation: there may be gastrointestinal dysfunction, slowing down of peristaltic movement causing poor defecation, laxative drugs such as lactulose can be given to laxative, increase exercise, consume more fresh vegetables and fruits, dietary fiber, which can enhance gastric motility, promote gastrointestinal peristalsis, and assist defecation. 2. Colorectal tumor: If there is malignant tumor or benign tumor (such as benign polyp) of colorectum, it will cause intestinal defecation, especially when rectal tumor stimulates the anus, and there will be the symptom of old bowel movement, and it is necessary to improve enteroscopy in time to clarify the cause of the disease, and timely surgical treatment. 3. Enteritis: when intestinal infection stimulates the intestinal mucosa, it can cause diarrhea, impure bowel movement, and symptoms such as old feces, timely anti-infective treatment, such as levofloxacin, etc. If there is inflammatory bowel disease, it can be given to aminosalicylic acid preparations, such as mesalazine and other drug therapy. If the effect of dietary adjustment is unsatisfactory, it is recommended to consult a doctor in time, improve the colonoscopy, abdominal CT and other related examinations, to clarify the cause of the disease, treat the cause of the disease, and use medication under the guidance of the doctor, to avoid self-medication, which will cause the disease to deteriorate.