For patients with advanced gastric cancer, surgery is not recommended if it is clearly advanced at the time of admission for examination. Advanced gastric cancer means that the gastric cancer may have invaded the plasma membrane or broken through the plasma membrane, resulting in pancreatic invasion, splenic portal invasion or hepatoduodenal ligament invasion, or the tumor has intra-abdominal implantation metastasis or distant metastasis, such as liver metastasis or lung metastasis, etc. Surgery is usually not recommended because the overall survival of advanced gastric cancer is relatively low, and surgery cannot prolong the survival and increase the pain, and after surgery, there are Surgery will not prolong the survival and increase the pain, and after surgery, complications may arise, which may shorten the overall survival. However, if there are symptoms of digestive tract obstruction, such as pyloric obstruction and so on, which prevent the patient from eating, palliative surgery can be considered to remove the tumor and reconstruct the digestive tract so that the patient can eat.