AIM:To compare the synergistic effect of eupolyphaga on chemotherapeutics of digestive canal cancer.METHODS: Drug sensitivity of stomach cancer cell(BGC-823) was determined in vitro by MTT anti-tumor screening assay for eupolyphaga with HCPT,5-Fu,Oxa,docelaxel,by comparing cell inhibition,the synergistic effect of eupolyphaga was analysed to find the best synergistic drug.RESULTS: The synergistic effects of eupolyghaga were more significant in HCPT and Oxa than those of 5-Fu and docelaxel in vitro(P