There is more than one statistical method in this paper. The statistical methods in this paper mainly include macro statistics and comparative analysis of individual samples. Macro statistics mainly include statistical charts and statistical tables, and the comparative analysis of samples mainly adopts statistical inference and variance analysis. Macro-statistics: This part mainly includes statistical charts and statistical tables. It mainly analyzes and judges the approximate similarity of samples, and strengthens opinions and arguments through the consistency inference of a large number of samples. Comparative analysis of a single sample: this is a commonly used statistical method in this paper. Select several groups of representative data from a large number of data, and then compare and analyze the samples, interpret the characteristics and differences among them, and find the inevitable connection and logic between them. Among them, statistical inference and variance analysis are both good explanation methods.