It refers to the process from learning mathematical language to mastering mathematical language, which often varies from person to person. Mathematical symbols and rules get meaning from the real world and act on reality in a wider range. Only when students understand the context and meaning of mathematical language, master various usages of mathematical language and gain a rational understanding can they describe it flexibly in various equivalent ways in mathematics learning and use it correctly in an abstract symbol system, thus reaching the highest level of learning mathematical symbol language.