The incidence rate of gastric cancer is high in Southeast Asia, so is the mortality rate.Due to the lack of specific performance, about 5%-20% of patients have found peritoneal metastases at the time of first diagnosis.At present, clinical studies on HIPEC in the treatment of patients with advanced gastric cancer peritoneal metastasis are almost related to abdominal perfusion after laparoscopic gastrectomy.Herein, we conduct a single-centre randomized controlled trial to explore the safety and feasibility of laparoscopic exploration combined with HIPEC in the treatment of advanced gastric cancer with peritoneal metastasis.