Signs of advanced stage of sigmoid colon cancer include abdominal pain, abnormal bowel movement, anemia and body wasting. Sigmoid colon cancer is a kind of malignant tumor, patients will not show obvious symptoms in early stage, which is difficult to find out. If not treated in time, in the advanced stage of sigmoid colon cancer, patients will have severe pain in abdomen, and the frequency of bowel movement will increase, and the stools will be bloody and not shaped. When the blood in stool is serious, the patient will suffer from anemia, and the cancer cells will consume the nutrients of the body, and the body will become thin. In advanced stage of sigmoid colon cancer, one can choose to have local radical surgery under the guidance of doctor to remove the tumor. After surgery, it is also necessary to cooperate with radiotherapy and chemotherapy treatment, and the drugs for chemotherapy can be chosen as injection oxaliplatin, irinotecan hydrochloride injection and so on. If patients suffer from sigmoid colon cancer, they need to go to the hospital for treatment in time, pay attention to rest after the operation and keep the wound area clean and dry. The drugs should be applied under the guidance of doctor.