Peritoneal metastasis of malignant tumors indicates that the tumor is at an advanced stage and is generally inoperable. Peritoneal metastasis of malignant tumor mainly manifests as abdominal mass, abdominal distension, vomiting, nausea, abdominal pain, diarrhea and other symptoms. Peritoneal metastasis belongs to the advanced stage of the tumor, which is not suitable for surgical treatment at this time, and can be treated conservatively, such as chemotherapy, targeted drug therapy, radiation therapy, immunotherapy, biotherapy and so on. The treatment of peritoneal chemotherapy can also be chosen, in which chemotherapy drugs are infused into the abdominal cavity to circulate in the abdominal cavity and fully contact with the lesions in the abdominal cavity, so that the tumor can be controlled to a certain extent. However, if the patient’s physical condition permits, and the peritoneal metastasis shows serious compression symptoms, palliative surgery can be done through minimally invasive laparoscopy to relieve the obstruction and compression, and improve the life treatment. After peritoneal metastasis of malignant tumors, it needs to be examined by professional doctors, judged, and formulated appropriate treatment and treatment plan.