本研究主要探讨数学软件GeoGebra，在高中数学三角函数单元教学中的应用。在结合三角函数教学的重难点，对比了GeoGebra与传统教学方法的效果后，设计研究了GeoGebra辅助下“函数y=Asin(ωx+φ)”一节的教学案例。并得出结论，GeoGebra辅助下的三角函数教学，有助于学生提升自主学习、合作交流的能力，培养数学学科核心素养。与信息技术深度融合的教学环节，有助于提升高中数学三角函数教学的质量和效率，增强学生的学习兴趣与效果。

This study mainly discusses the application of mathematical software GeoGebra in the teaching of trigonometric function unit in high school. The author compared the effects of GeoGebra and traditional teaching methods by combining the important and difficult points of trigonometric function teaching, and designed and studied the teaching cases of " function y=Asin(ωx+φ)" section with the assistance of GeoGebra. It is concluded that the trigonometric function teaching assisted by GeoGebra can help students improve their ability of independent learning, cooperation and communication, and cultivate the core quality of mathematics. The teaching links deeply integrated with information technology are helpful to improve the quality and efficiency of trigonometry teaching in high school, and enhance students' learning interest and effect.