集合和函数知识是现实世界客观事物规律的反映。它们所反映的思想和方法，对于人们认识事物、解决问题有着重要的指导作用。在小学数学教学中，结合有关内容，运用直观手段，适当渗透一些集合、函数思想，不仅可以扩大学生的知识面，加深学生对基础知识的理解，还能有效地训练和培养学生的思维能力，为进一步学习打下良好基础。 The knowledge of collections and functions is a reflection of the objective laws of the real world. The ideas and methods they reflect have an important guiding role for people to understand things and solve problems. In primary school mathematics teaching, combining relevant content, using intuitive means, and properly infiltrating some sets of functions, not only can expand students’ knowledge, deepen students’ understanding of basic knowledge, but also can effectively train and train students’ thinking ability. To lay a good foundation for further study.