Abstract:Dairy bacteria pollution could caused serious consequences， threatened the consumers health. To im－ prove the accuracy ofbacteria detection in dairy products， and reduced detection error ， an automatic identifi－ cation detection methodwere developed. The method uses image acquisition and recognition technology com－ bined with rapid gene detection technology to realize the purpose of automatically identifying the total number of bacteria， number of viable bacteria and bacteria species. Compared with the classical detection method， the co incidence rate is more than 99 %， and had fast， convenient， economic advantages， suitable for promotion and use.