Abstract:In order to explore the beneficial mineral elements and nutrients in traditional fermented white sour soup, The method of ICP-OES determination of mineral content in traditional white sour soup was determined through experiments,and the main nutrient components were determined and analyzed. The results showed that the effect of using 10% concentrated nitric acid to digest the traditional white acid soup sample was the best, the RSD of the determination method was 0.26%~2.35%, and the average recovery rate was 96.5%~113.6%, indicating that the ICP-OES method for the determination of mineral elements in white acid soup had high accuracy and precision. The contents of four major elements in the sample are 51.4308 mg/L and 37.7304 mg/L respectively, and the contents of sodium and potassium are 6.6631 mg/L and 1.6452 mg/L respectively; The contents of five trace elements copper, zinc, iron, manganese and silicon ranged from 0.0516mg/L to 2.4851mg/L, while aluminum was not detected. The content of functional component polyphenols is 11.844 ± 0.051mg/L, protein content is 6.392 ± 0.021g/L, amino acid content is 2.767 ± 0.04mg/L, and the content of harmful substance nitrite is 0.601mg/L under the safety standard. The results provide a theoretical basis for the research of Baisuan Tang and the development of related products.