How long a patient with mesenteritis can live is affected by the condition of the patient’s primary disease and is determined by the patient’s condition. With standardized and effective treatment under the guidance of a doctor, the life expectancy of most patients can be maintained for several years or even more than ten years, and it is recommended that patients be diagnosed and treated early. Mesenteritis is mostly caused by autoimmune system diseases, such as systemic lupus erythematosus, polymyositis, etc. The main symptoms include abdominal pain and abdominal mass. Most of the patients due to autoimmune system diseases, in the examination will appear white blood cells, platelet drop, anemia, etc., need to further examination of abdominal enhancement CT to clarify the condition. The treatment of mesenteritis is based on symptomatic treatment, correction of anemia, application of glucocorticoids and immunosuppressants and other drugs, under the guidance of the doctor to carry out active and standardized treatment, most of the patients’ life expectancy can be up to a few years, and some patients can even be more than ten years. It is recommended that patients seek early medical diagnosis, timely standardized treatment, so as to avoid the deterioration of the condition.