The data of patients with STC preformed surgery of laparoscopic subtotal colectomy with anti-peristaltic ileosigmoid anastomosis during 2009.01-2014.05 was reviewed. The related status such as frequency of defecation, course of constipation, laxatives use condition the condition of using laxatives, and changes in weight were investigated. Changes of defecation and weight, periprocedural complications (wound infection, lung infection and intestinal fistula), long-term complication (malnutrition, abdominal pain, ileus), life satisfaction, wexner score of pre-operation and postoperation ect were investigated in follow-ups.