I. Definition of Educational Psychology There are generally two views on the definition of educational psychology: one view holds that educational psychology is a science that studies psychological phenomena and their laws in the process of education; Another view is that educational psychology is a science about psychological laws of middle schools and situational teaching in schools. Generally speaking, a person, from children to teenagers, spends most of his time studying and doing activities at school. Therefore, we think it is more appropriate to define educational psychology as "the science of studying the basic psychological laws of teaching in middle schools and schools". This definition contains four meanings: first, the research object of educational psychology is the psychological phenomenon in the situation of people studying and teaching in school, not the psychological phenomenon in all educational fields. Secondly, in the context of school learning and teaching, people (teachers and students) are the main body of activities and the undertaker of behaviors, which is the focus of educational psychology research. Third, explore and reveal the basic psychological laws of learning and teaching in close connection with the educational process. Learning and teaching are two inseparable aspects in the process of education. Psychological activities in learning and teaching all occur, develop and show in the process of education. Without the process of education, it is impossible to study and understand it. It is worth noting that educational psychology is different from pedagogy. It does not study the educational process itself, but pays attention to the psychological problems in learning and teaching activities in the educational process. Fourthly, the basic task of educational psychology is to reveal the operating mechanism and basic laws of people's psychological activities and their interaction in the situation of school teaching and learning, rather than just describing the psychological phenomena in the process of learning and teaching. Modern educational psychology believes that school situation includes two aspects: teaching and learning. All educational activities in schools can be classified as teaching, and the influence on students can be classified as learning. The research object of educational psychology is students' psychological activities and their development laws under the influence of education and teaching, such as students' mastery of knowledge and skills, moral norms and the formation of their personality. The relationship between students' own physique and psychological development, as well as the psychological factors that affect each other between students and teachers, students and students, are also the objects of educational psychology research. .