三角函数是数学中的重要内容，与微积分、向量、复数等都有联系，在中学数学教材中也占有重要地位。本研究选取三角函数部分，以人教版初中教材九年级下册和2019新人教A版、B版高中教材为研究对象，运用文献分析法、比较分析法，主要对2019新人教A、B版教材进行分析，得出的结论是：人教A、B版教材编写逻辑差异很大，各成体系，各有千秋，内容上，B版更注重联系生活，知识广度大，更细致，将数学建模作为单独模块，习题上，B版题量更大，A版常通过习题补充知识点，习题难度更大。本文旨在通过呈现A、B版教材特点为老师在教学中对两版教材的素材重构提供参考。

Trigonometric function is an important content in mathematics, which is related to calculus, vector and complex number, and plays an important role in middle school mathematics textbooks. In this study, the trigonometric function part is selected, and the second volume of Grade 9 of junior high school textbooks published by People's Education Edition and the high school textbooks published by People's Education Edition A and B in 2019 are taken as the research objects. By using the methods of literature analysis and comparative analysis, the author mainly analyzes the textbooks published by People's Education Edition A and B in 2019, and draws the conclusion that there are great differences in the logic of compiling textbooks published by People's Education Edition A and B, each with its own system and its own merits. The purpose of this paper is to provide reference for teachers to reconstruct the materials of the two editions of textbooks by presenting the characteristics of A and B editions of textbooks.