Daily diarrhea, abdominal pain to exclude organic diseases, such as colonic inflammation, colonic polyps, inflammatory bowel disease, colonic tumors, routine stool routine plus occult blood, to clarify whether there is infection, bleeding and so on. In the case of bowel cleansing, perfect enteroscopy, acute intestinal inflammation can be applied antidiarrheal drugs, according to the infection with antibiotics, colon polyps need to be endoscopically resected and perfect pathological examination, inflammatory bowel disease need to be long-term use of mesalazine, the serious need for hormone therapy. Early endoscopic resection of colon tumors is feasible, and surgery can be performed in middle and late stages. Functional enteropathy should be considered in most cases to exclude organic diseases, and it is necessary to improve living and eating habits, regular work and rest, light diet, pay attention to abdominal warmth, avoid stimulation, and quit smoking and drinking, and it can be applied to trimetoprim, and oral bifidobacterium trichomonas capsule, etc. to regulate the gastrointestinal function.