Summary of case history,　Li, male, 83 years old, farmer, 14 years ago ,In the absence of obvious inducement, the patient had unformed stool with increased frequency, and the symptoms were aggravated 5 years ago with Mucopurulent bloody stool appeared.June 27, 2016 electronic colonoscopyshows that The ileocecal region (near the appendiceal fossa) and the intestinal wall at the beginning of the ascending colon were scattered with punctate mucosal defects, shallow depressions, covered with thin moss, tough, and not much blood in the forceps.The transverse, descending and sigmoid colon were smooth and the intestinal lumen was unobstructed. No specific new organisms were observed. The rectal mucosa was smooth and soft, with no obvious abnormalities; pathologyshows that Backblind biopsies,mucosal chronic inflammation with erosion. After treatment, the symptoms are relieved and he wanted to be treated by traditional Chinese medicine. Current main disease: loose stools, 2 times per day, no pus and blood stool, occasionally mucus, slightly hidden pain in the left lower abdomen. The history of food and drug allergies was denied, and the physical examination and laboratory examination showed no obvious abnormalities. The patient was in the remission period of ulcerative colitis, Now, mesalazine is taken orally at a low dose, one tablet (0.5 g) once, three times a day, but the symptom is not relieved obviously, repeated attacks, very painful. Professor Liu thinks that spleen deficiency withdampness and heat accumulated is the main pathogenesis throughout UC, clarified the lesion stage and treated it on the basis of invigorating the spleen and stomach, clearing heat and dampness.Reduce the clinical sign and symptom of patients, reduce the attack frequency, improve the pathological results under the microscope, and achieve good curative effect, which provides a new reference for the treatment of digestive system diseases in the future.,TCM diagnosis,　Long dysentery (Splenic deficiency with dampness and heat),Western medicine diagnosis,　Ulcerative colitis,Therapeutic methods,　Traditional Chinese medicine decoction oral,Clinical outcomes,　After the intervention of traditional Chinese medicine, the symptoms such as mucus thinning and stool disappeared, and his physical and mental state were also improved significantly. Under the microscope, the inflammation of the mucosa was less than before, and there was no obvious active inflammation by visual observation, so the patient was continued to consolidate with traditional Chinese medicine.