The purpose of this study was to identify excellent immune-enhancing substance from Korean wheats(Eunpa, Gueru, Alchan, Topdong, Suwon 267, Gobun) compared with imported ones(Australian standard white, ASW; Dark northern spring, DNS). Phagocytic activities of PBS (phosphate buffered saline, pH 7.4) and EA(ethanol-acetic acid) extracts from the wheats were determined using mouse macrophage J774 cell line. In order to set the optimal experimental condition up, the cultured cells were tested in varying experimental conditions. About two to five times higher phagocytic activity was shown in EA extract of Korean wheats compared to that of imported wheats. PBS extracts of wheats did not show increased phagocytic activity compared to control that did not add any extract. The EA extract of Gobun wheat showed the highest phagocytic activity. From the experiment we found that the optimal experimental condition was shown in two hours of reaction time and 0.05mg amout of EA extract added to J774 cells.