【Abstract】 Congo red staining can be used to detect effectively the remains of starch grain processing,so some pottery objects and stone implements unearthed from the Diaolongbei site were tested through a starch grain analysis. Most of the examined artifacts were detected to bear remains of starch grain,which provided important information for understanding their function. In particular,processed and undamaged starch grains were discovered on rare-seen pottery rollers,which,therefore,must have been used for processing plants. The remains of cooked starch grain on the grooved basins suggest that this type of vessel may be a processing tool or container of plant food,which reflects the multiple use of ancient pottery.更多还原