Survival of sigmoid colon malignant tumor can not be generalized, the specific survival of the patient with the patient’s clinical stage, pathological staging, the speed of development of the disease as well as the patient’s own physical condition. Sigmoid colon malignant tumor Ⅰ stage patients, can through surgery radical resection combined with postoperative radiotherapy and other treatments, the patient’s five-year survival rate can reach about 90%; Ⅱ patients can reach 60% -80%; Ⅲ patients can reach 30% -50%; Ⅳ patients found late, the general five-year survival rate of no more than 10%. Therefore, the earlier the stage of sigmoid colon malignant tumor, the earlier the patient finds out, the more timely with the treatment, then the higher the possibility of the patient to get cured, the higher the five-year survival rate. It should be noted that sigmoid colon malignant tumor needs early detection, early diagnosis and early treatment. Therefore, for those who are older than 40 years old, have a history of intestinal polyps, family history of sigmoid colon cancer high-risk group, should be regular physical examination of the intestinal condition.