Rhizopus Xiaoqu is the major ingredient in Xiaoqu Baijiu production. Its quality will directly influence the liquor-making process and the quality of the base liquor. Accordingly, the detection of sugar content of testing rice for Rhizopus Xiaoqu production was investigated and optimized in this study. The optimized detection method had the features including simple operation and high precision. Meanwhile, the corresponding application standards were formulated, which were useful reference for Xiaoqu Baijiu...