Gastric cancer is one of the most common malignant tumors in the world, and its prevalence is the second highest among malignant tumors in China, and the mortality rate is the highest. The new National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines for Gastric Cancer lists distant metastasis as the only indicator of stage IV gastric cancer. In other words, if patients with gastric cancer find distant metastasis (liver, peritoneum, ovary, lung, brain, etc.), they are considered to have stage IV, i.e. advanced gastric cancer. Patients with advanced gastric cancer have lost the chance of radical surgery, and the treatment means mainly include radiotherapy, chemotherapy, bioimmunotherapy and palliative surgery. The World Health Organization (WHO) defines palliative care as “an intervention that neither accelerates death nor prolongs survival, but is effective in relieving pain or other symptoms that cause suffering”. Palliative surgery for gastric cancer is mainly used to reduce the occurrence of complications. For example, the NCCN guidelines for surgical treatment of advanced gastric cancer recommend: unresectable tumors with peritoneal involvement, distant metastases, or locally advanced (e.g., tumor invasion or encirclement of large blood vessels); partial gastrectomy for unresectable tumors for the sole purpose of relieving bleeding symptoms; palliative gastrectomy should not be performed unless the patient is symptomatic and does not require lymph node dissection; gastrojejunostomy bypass surgery may be effective for relieving Gastrojejunostomy bypass surgery may be effective in relieving obstructive symptoms; gastrostomy and/or placement of jejunal nutrition tube may be considered. The best treatment for advanced gastric cancer is still widely divided between aggressive chemotherapy, radiotherapy and surgery, or nutritional support alone. However, with the emergence of effective chemotherapy and targeted drugs in recent years, the expectation of the efficacy of advanced gastric cancer is gradually increasing; coupled with more mature surgical and anesthetic techniques and perioperative monitoring and management, there is a tendency to perform more palliative surgery to improve the efficacy under the premise that the safety of surgery is guaranteed, and some patients do benefit from the surgery in clinical practice.