In order to meet the requirements of the final quality control and real-time monitoring of rice milling degree during process, a detection technology which was objective and accurate and easy operation was studied by combination of the detection methods of whiteness and residual bran degree of rice. The results showed that the sensitivity of whiteness and residual bran degree could meet the requirements of production process. There was a significant negative linear relationship between whiteness and residual bran degree. In the actual production process, a model could be set between them and with the bran degree used as the final quality control index and the whiteness for real-time monitoring of rice processing.