A determination method of urea content in yellow rice wine by using high performance liquid chromatography with fluorescence detection(HPLC-FLD) has been developed. According to JJF 1059-2012 Evaluation and Expression of Uncertainty in Measurement, the mathematical model was established based on the given testing principle, and the components of uncertainty in the measuring process of determining urea in yellow rice wine using HPLC-FLD method were studied and analyzed, and then the combined uncertainty and ...