Symptoms before dying of advanced colon cancer, most of the patients are in the state of malignant fluid, that is to say, the whole body is emaciated, the abdomen is bulging, there is ascites and even intestinal obstruction and so on. The main reason is that the growth of tumor cells is very vigorous, which will consume a lot of nutrients in the human body, and a large part of nutrients eaten by the human body will be consumed by the tumor cells, so that the nutrients consumed by the normal cells of the human body will be very little, which will lead to malnutrition, wasting and malignant state after a long period of time. Many patients will have tumor metastasis, such as intra-abdominal lymph node metastasis or distant metastasis, lung metastasis, liver metastasis, etc., which may lead to abdominal pain such as right upper abdomen, dry cough, chest tightness, and hydrothorax. There may also be manifestations of intestinal obstruction, such as the patient’s abdominal pain is very severe, abdominal distension, able to see the stomach type, intestinal type and so on. There may also be gastrointestinal hemorrhage, such as vomiting blood, and there may even be blood in the stool, bloody stools, and black stools.