Different students have different needs. According to the inquiry, we can't deny the existence value of off-campus training just because there are some problems. In fact, every child is unique and has different needs and problems in learning. In daily teaching, due to the large number of classes, it is difficult for teachers to give personalized teaching and guidance to each student. At this time, if children have difficulties in certain subjects and need extra tutoring, off-campus training becomes particularly important. For example, Xiao Ming always lags behind his teacher in mathematics. After communicating with his parents, he chose a high-quality math training class. After a period of study, his math scores have obviously improved. Secondly, it must be admitted that just like every student is different, every teacher has his own characteristics and level.