One yuan foreign teacher is a distinctive online teaching and training platform, focusing on English training. It features one yuan teaching every day, with an annual fee of 365 yuan, which attracts many English learners and parents. The preschool education level of foreign teachers with one yuan is also relatively high. According to the characteristics of 5- 12-year-old children, the scientific grading system is adopted to teach at different grades, covering six grades of kindergarten and primary school, so that each child can directly find a course suitable for his own level.