Abstract:Abstract: Objective?To discuss the impact of minimally invasive surgery combined with postoperative intraperitoneal hyperthermic perfusion chemotherapy on cellular immunity, alpha-fetoprotein (AFP), carbohydrate antigen 724 (CA724) and carcinoembryonic antigen (CEA) in patients with advanced adenocarcinoma of the esophagogastric junction (AEGJ).?Methods?200 patients with AEGJ from January 2014 to January 2016 were selected, they were divided into group A and group B according to random number table. The group A was received routine treatment of minimally invasive surgery, the group B was received postoperative intraperitoneal hyperthermic perfusion chemotherapy on the basis. The cellular immunity (T lymphocyte subsets CD3+, CD4+/CD25+), tumor markers (AFP, CA724, CEA), adverse reactions and survival situation were compared between the two groups.?Results?The CD3+, CD4+ in group A and group B after treatment were significantly higher than those before treatment, the CD3+, CD4+ in group B after treatment were significantly higher than those in group A, the CD4+/CD25+, AFP, CA724 and CEA in group A and group B after treatment were significantly lower than those before treatment, the CD4+/CD25+, AFP, CA724 and CEA in group B after treatment were significantly lower than those in group A, the difference was statistically significant (P?0.05). The 3-year survival rate in group B was significantly higher than that in group A, the difference was statistically significant (P?0.05). There was no significant difference in the incidence of adverse reactions between the two groups (P?>?0.05).?Conclusion?Minimally invasive surgery combined with postoperative intraperitoneal hyperthermic perfusion chemotherapy can effectively improve the cellular immunity and the AFP, CA724 and CEA levels in patients with AEGJ, which can improve the survival and prognosis of patients, it has the good safety.