Advanced gastric cancer is often associated with widespread metastasis, and frequently presents with complications such as pyloric obstruction, cancerous perforation, bleeding, and ascites. Clinically, these patients have lost the opportunity for curative surgery. Such patients account for approximately 10% to 15% of all gastric cancer cases. With the advancement of modern diagnostic and therapeutic technologies, it has been gradually recognized that treatment for advanced gastric cancer should adopt a new concept of active treatment to replace the old mindset of passive waiting. From the perspective of comprehensive surgical treatment, the main contents include: (1) Never easily giving up on the surgical treatment opportunities for late-stage patients. Currently, cytoreductive surgery, which is highly recommended, emphasizes that actively removing the primary tumor can significantly reduce some complications related to advanced tumors and also create conditions for other comprehensive treatments. (2) For patients who indeed have no surgical indications, non-surgical or minimally invasive treatment methods should be adopted as much as possible to alleviate complications and improve the quality of life for patients. (3) Actively carrying out terminal care, including pain relief, sedation, dietary adjustment, nutritional supplementation, and mental and psychological nursing, in order to maximize the reduction of suffering for terminally ill patients. Although there has been no major progress in this field, the application of certain new technologies can achieve the purpose of improving symptoms and enhancing the quality of life for patients. The following is an introduction. Section 1: Treatment for pyloric stenosis or obstruction caused by advanced gastric cancer.