Colitis patients, if the condition is relatively mild and timely treatment, generally does not affect life expectancy; if the condition is severe, or treatment is not timely, may affect the patient’s life expectancy, there is no definitive answer to how long to live, it may range from a few months to a few decades. Colitis is divided into chronic colitis and ulcerative colitis, etc. It is related to improper diet, immune factors, heredity, intestinal flora imbalance, etc., and may cause abdominal pain, diarrhea and other symptoms. Colitis can recur, if the treatment is timely, usually pay attention to diet, eat light and easy to digest food, quit smoking and alcohol, etc., generally will not have an impact on life expectancy. Colitis patients, if you do not pay attention to diet, treatment is not timely and electrolyte disorders, may cause acute shock, endangering the patient’s life; in addition to the elderly patients, the course of the disease is longer, the condition of recurrent episodes, there may be malignant changes and intestinal tumors. The specific survival time is related to whether the tumor is metastatic or not, and the patient’s personal physical condition. Survival time ranges from a few months to decades. Colitis patients, it is recommended to pay attention to diet, active treatment, maintain a good psychological state, conducive to the recovery of the disease.