对工业和试剂级氢氧化钠中碳酸钠的测定方法进行了探讨，对测定结果的误差来源进行了详细的分析，针对目前分析方法的有关问题提出了新的看法，并对分析方法进行了改进。本文提出的改进分析方法与目前的分析方法相比较，分析结果的准确性有了提高，更加客观地反映出产品的真实质量。 The methods for determination of sodium carbonate in industrial and reagent grade sodium hydroxide were discussed. The sources of error in the determination results were analyzed in detail. Some new opinions on the problems of the current analytical methods were put forward and the analytical methods were improved . Compared with the current analysis methods, the improved analysis method proposed in this paper has improved the accuracy of the analysis results and more objectively reflected the true quality of the products.