This project is a multi-center, prospective, randomized controlled clinical observation the safety and efficacy that stage IV limited peritoneal metastasis of gastric cancer patients accept hyperthermic intraperitoneal chemotherapy plus neoadjuvant chemotherapy with CRS and systemic chemotherapy. With advanced-stage gastric patients of confined to the peritoneal as the research object, with median progression-free survival and overall survival, adverse events as the end points.