Ausubel, an American educational psychologist, believes that there are various types of human learning. However, judging from the relationship between the content of learning and the existing knowledge and experience of learners, human learning can be divided into meaningful learning and mechanical learning; According to the way of learning, students' learning can be divided into receptive learning and discovery learning. In the process of teaching, the knowledge gained by students through "discovery" learning is very limited. "It is difficult to find that learning is an effective main means." Most knowledge still needs students to master through "receptive learning". Because the teaching process is a special cognitive process, students mainly accept indirect knowledge, which determines that students must be receptive to acquire a lot of knowledge. Ausubel criticized the view that speech teaching and receptive learning were reduced to empty preaching and mechanical imitation. He made a scientific analysis of receptive learning with the theory of meaningful learning, and pointed out that receptive learning cannot be equated with mechanical learning, but it can be meaningful.