Pedagogy is a science about how to cultivate people. To solve the problem of cultivating people, complex educational phenomena will inevitably occur in the educational practice of cultivating people. "When people realize that some educational facts are closely related to people and have certain significance to people's development, but they don't know it yet, but at the same time they want to know it, want to figure it out and decide to study it, which constitutes an educational problem. When people's understanding of education reaches this level, that is, education is the object of pedagogy, pedagogy comes into being. " Therefore, the most fundamental object of pedagogy research is education.