Analysis of its role as an entry point: language for thinking, in fact, can be said to be a tool. The former serves the latter. This service is mainly reflected in two aspects, one is to make the latter more organized, the other is to enhance their communication with society. Language plays a vital role in the closeness of thinking, lack of language, thinking always with personal color. For thinking, language acts as a tool, but it is not unique, in addition to the language to describe the thinking, people can use other symbols and appearances to express the thinking. For young children who have not yet mastered language skills, they can also use shapes, colors, etc. instead of language to describe their thinking. As for the deaf and mute, although they do not have the ability to speak, they can use gestures and so on for non-verbal thinking.