There are different understandings of "bilingual education", for example, some people think that the so-called bilingualism refers to mastering and mastering two languages in an all-round way, and being able to think and communicate flexibly and skillfully in two languages; Some people think that bilingualism means not only mastering the first language of one's own country, but also understanding the second language to varying degrees. People usually refer to the former as true bilinguals and the latter as second language users. Bilingual education for preschool children means learning a second language at an early age.