Why is the combination of numbers and shapes widely used in reality? Numbers and shapes are the basic elements of all things in the world, so mathematics that embodies the laws of numbers and shapes is everywhere in the real world. The combination of numbers and shapes is a very important way of thinking in mathematics. In essence, it runs through every stage of the development of mathematics, and is clearly embodied after Descartes' Variable and Analytic Geometry, which promotes the development of elementary mathematics to advanced mathematics. Mathematics has expanded from studying only static and straight objects to studying moving and bending objects. The thinking method of combining numbers and shapes is widely used. In the process of solving problems, we can simplify the complex and turn the abstract into concrete, which plays an excellent role in helping students broaden their minds and break through the mindset.