At present, the best chemotherapeutic drugs for gastric cancer are mainly in 4 categories: 1. paclitaxel, represented by polyenol paclitaxel also known as docetaxel; 2. platinum, represented by oxaliplatin; 3. topoisomerase inhibitors, represented by irinotecan; 4. oral chemotherapeutic drugs fluorinated pyrimidines, represented by Siroda and Estwan. These new chemotherapeutic agents are used for gastric cancer, and the efficiency of single drug is about 20%, and the combination can improve the chemotherapy effect. In the route of administration of chemotherapy, there are oral administration, intravenous administration, peritoneal cavity administration, and regional perfusion administration by arterial cannula, etc.