Multiple pre-clinical studies have indicated that in dozens of animal tumor models and human tumor-metastatic mice tumor models, the effective rate of Endostar was 47%～91% in daily dosage of 10～100mg/kg, and covered human commonly seen malignant tumors, such as lung cancer, gastric cancer, breast cancer, colorectal cancer, hepatic cancer, malignant melanoma and non-Hodgkin's lymphoma, etc.. The development and progression of gastric cancer was in association with angiogenesis. An animal research observed the influence of Endostar on tumor strains in nude mice with gastric cancer, and the results showed that tumor size shrunk rapidly and the expressions of VEGF, bFGF, VEGF-C, VEGFR-3, bcl-2 and PDGF decreased significantly after treatment in experimental group, demonstrating that Endostar could reduce angiogenesis, increase tumor cell apoptosis and inhibit tumor growth in gastric cancer. An investigation of small-sample Endostar concomitant with chemotherapy on patients with advanced gastric cancer primarily indicated the efficacy and feasibility of Endostar concomitant with chemotherapy in treating gastric cancer.