Enteritis usually causes diarrhea, and constipation is rare. In most cases of enteritis, due to the intestinal mucosa due to bacterial infection, resulting in mucosal edema, deformation, necrosis, which in turn affects the intestinal digestion and absorption function, mucus-like stools and mucus blood stools. There are a few patients with enteritis, due to the mucosal necrosis is not serious, there are still changes in intestinal function, due to the intestinal absorption of water to enhance the function, resulting in dry stools, and then constipation, but constipation and diarrhea will alternate, will not be purely manifested as constipation. Generally, dietary adjustments are used to improve constipation, such as drinking more water, eating more fresh fruits and vegetables, and exercising moderately to help intestinal peristalsis. Severe constipation can be treated with corkscrew under the guidance of a doctor. Constipation in patients with enteritis will appear anal falling, alternating diarrhea and constipation, there will be a sharp and heavy performance, and constipation and proctitis are generally causative of each other.