Jules Henri Poincaré, the great French mathematician, said that if we wanted to see the future of mathematics, the proper way was to study the history and present state of the science. Integrating the History of Mathematics into primary school mathematics classroom teaching can stimulate students' interest in learning, inspire their thinking and enhance their mathematical literacy, while cultivating good qualities, promoting mathematical culture and enhancing cultural confidence. In the paper, the value of integrating the History of Mathematics into students' learning will be specifically explained through the explanation of mathematics knowledge points in primary schools.