The overall survival period of colon cancer is about 1 year if peritoneal metastasis occurs. Peritoneal metastasis indicates that colon cancer is advanced, that is, stage IV colon cancer, and the tumor has invaded outside the intestinal wall and invaded inside the abdominal cavity, including the peritoneum, greater omentum and intestinal mesentery, and even there are cancer nodes on the intestinal wall. The cancer nodules will continue to grow in the abdominal cavity, and incomplete intestinal obstruction or complete intestinal obstruction may occur, and the patient will have abdominal pain, paroxysmal pain, and when the disease progresses to advanced stage, the patient will not be able to eat, abdominal distension is very obvious, the anus will stop venting and defecating, and the cancer nodules will produce cancerous ascites in the abdominal cavity, the patient will have abdominal distension, fluid in the abdominal cavity, general emaciation, malignancy, and further Further progress may lead to death.