Constipation due to chronic colitis can be treated by improving lifestyle habits, oral medications, and glycerin enemas. Medications should be taken under the guidance of a doctor. 1. Improve living habits: diet, eat more fiber-rich foods, fruits, light, soft diet; increase running, walking and other sports, accelerate gastrointestinal peristalsis, promote fecal discharge. 2. Oral medication: On the basis of improving living habits, lactulose, mosapride, methylcellulose, polyethylene glycol and other medications can be given to induce diarrhea according to the needs of the condition. 3. Glycerin enema: when the patient’s feces is hard and accumulates in the rectum, glycerin enema, saline and other enemas can be given to defecate. If the patient is chronic colitis caused by constipation, it is recommended to improve the lifestyle on the basis of the root cause of the disease, so as to treat constipation, if the above measures can not be relieved, it is recommended to go to the hospital in a timely manner.