Peritoneal metastasis refers to the metastasis of cancer cells spreading to peritoneal region, in the advanced stage of cancer cancer cells will metastasize all over the body, and peritoneal metastasis refers to the metastasis of cancer cells into the peritoneum. Usually, cancer cells that metastasize to the peritoneum mainly come from stomach cancer, liver cancer, intestinal cancer, uterine cancer and other cancers. After the cancer cells metastasize to the peritoneum, they will stimulate the peritoneal cells to secrete a large amount of exudate, resulting in peritoneal fluid accumulation. When the fluid accumulation is excessive, the patient usually has a bulging abdomen or frog-like abdomen, positive ascites sign, and usually accompanied by depressed edema of both lower limbs. The metastasis of cancer cells to peritoneum will also lead to digestive system symptoms, and the patient is prone to loss of appetite, nausea, vomiting, abdominal pain and other discomforts, and jaundice, intestinal obstruction and other symptoms may occur if the tumor presses on the liver, bile ducts and gastrointestinal tract. The occurrence of peritoneal metastasis indicates that the patient’s condition is already very serious, and the patient should pay attention to it, and it is recommended that the patient go to the hospital for further diagnosis and treatment, and standardize the treatment under the guidance of a professional doctor, so as to avoid delaying the condition.