Abstract: The postoperative recurrence rate of gastrointestinal cancer is high. The therapeutic effect of traditional chemotherapy is not satisfactory, such as chemotherapy through vein and intestine perfusion and so on, and the side effects are obvious. In recent years, researchers in and abroad have begun to study the effect of intraperitoneal chemotherapy. Whether early postoperative intraperitoneal chemotherapy affect the healing of anastomotic stoma is still controversial. Intraperitoneal chemotherapy combined with medicine can achieve a better therapeutic effect. This article reviewed current issues of intraperitoneal chemotherapy, espe-cially its validity and safety.