Cultivating primary school mathematics symbol consciousness is one of the core concepts of mathematics curriculum standards. In the overall goal of primary school mathematics teaching, it is put forward that primary school students should "experience the process of using mathematical symbols and mathematical graphics to describe the real world, establish their primary feelings about numbers and symbols, and develop abstract thinking." Symbol consciousness mainly refers to the ability to understand and use symbols to express numbers, quantitative relations and changing laws; Knowing how to use symbols can be used for general operations and reasoning. Mathematical symbols are concise and abstract normative languages, which are accurate and clear, and have the functions of simple thinking, improving efficiency and facilitating communication. One of the tasks of mathematics course is to cultivate students' understanding and feeling of using symbols to represent numbers and their operations in the process of mathematics learning.