The treatment of peritoneal cancer also depends on different pathological types and degrees of peritoneal cancer, and different treatment methods are selected as follows: 1. Mucinous peritoneal cancer: the more common mucinous carcinoma of appendix, mucinous carcinoma of ovary or mesothelioma or pseudomucinous tumor of peritoneum, this type of peritoneal cancer is called mucinous peritoneal cancer. The treatment effect of this type of peritoneal cancer is worthy of affirmation, and the main method is abdominal tumor reduction plus peritoneal thermal perfusion chemotherapy, the abbreviation is CRS+HIPEC. After surgical resection, if there are still residual microscopic lesions or cellular malignant tumors in the abdominal cavity, the residual cancer cells will be killed by continuous perfusion of the abdominal cavity for 1-1.5 hours with the use of peritoneal perfusion fluid heated to 43℃. After thermal perfusion treatment, the treatment effect is better for mucinous peritoneal cancer, and the 3-year cure rate of such patients can reach 70%-80%; 2. Metastatic peritoneal cancer: such as gastric cancer, colorectal cancer, cancer peritoneal metastasis, such patients often have metastasis combined with ascites, i.e. cancerous ascites, not only metastasis on peritoneum, but also on intestine, mesentery, subdiaphragm and organs. Therefore, it is more difficult to treat this kind of metastatic peritoneal cancer. If there is no metastasis to the organs, and if there is simply peritoneal metastasis and cancerous ascites, the therapeutic effect of heat perfusion chemotherapy for this kind of patients is also worth affirming. However, if there is organ metastasis combined with intestinal obstruction, the effect of simple thermal perfusion therapy is not good, so it is necessary to release the intestinal obstruction and then heat and perfusion chemotherapy, and the patient also benefits. 3. peritoneal metastasis of gynecological tumor: the same applies to this kind of patients, and the patient also benefits from the abdominal metastasis reduction and heating and perfusion therapy. To sum up, there are methods to treat peritoneal cancer now, even if it cannot be cured, it is helpful for patients to prolong survival, reduce pain and improve quality of life.