Abstract: With the prevalence of diagnostic laparoscopy, the concept of conversion therapy in unresectable gastric cancer, as well as the technical application of port implantation and hyperthermic intraperitoneal chemotherapy, new progress has been made in the area of gastric cancer peritoneal metastasis. However, the prognosis for peritoneal metastasis of gastric cancer remains extremely poor, and surgical treatment still lacks high-level evidence. Surgeons should pay attention to standardized diagnosis and evaluation during medical practice, and should conduct multidisciplinary discussions on important issues, such as patient screening, surgical indications, and postoperative chemotherapy. The progress of drug therapy is still the key to improve the prognosis of gastric cancer peritoneal metastasis in the future.