At present, the so-called intraperitoneal chemotherapy is not able to make malignant tumors shrink in the majority of cases. Chemotherapy for malignant tumors usually adopts the way of intravenous infusion, so as to kill tumor cells and make them shrink or even disappear. For intraperitoneal chemotherapy, the main purpose is to kill the tiny malignant tumors in the abdominal cavity, or for advanced tumors, we can try to use chemotherapy drugs to directly perfuse the abdominal cavity, but generally speaking, chemotherapy drugs directly contact with the malignant tumors in the abdominal cavity, and the effect of the killing of the malignant tumors is not very obvious. At present, most of the intraperitoneal chemotherapy cannot shrink the primary malignant tumors, and most of them use intraperitoneal thermal perfusion chemotherapy, which aims to kill the residual cancer cells shed in the abdominal cavity.