Chiauranib (CS2164) selectively inhibits multiple kinase targets aurora B kinase (AURKB), colony-stimulating factor 1 receptor (CSF1R), and vascular endothelial growth factor receptor (VEGFR)/platelet-derived growth factor receptor (PDGFR)/c-Kit, thereby inhibiting the rapid proliferation of tumor cells, enhancing the antitumor immunity, and inhibiting tumor angiogenesis, to achieve the anti-tumor efficacy.