Abstract: Cation exchange capacity in soil is one of the important indicators for evaluating soil fertility,which is of great significance for the rational utilization of land resources,modernization of agricultural production,and sustainable development.This article proposes a train of thought and experimental plan for optimizing the analysis method of cation exchange capacity in soil by analyzing the current problems.This includes optimizing the collection and preparation of samples,improving analytical methods,and other means to improve the accuracy and stability of the determination of cation exchange capacity in soil.This study is of great significance for improving soil quality assessment and improving land use efficiency.