Suhomlinski believes that the dual mission of education is to promote scientific and technological progress and people's all-round development, which requires the establishment of a corresponding intellectual education system. This intellectual education system has two characteristics: first, it fully embodies the requirements of the times for the all-round development of people and cultivates rich, comprehensive and civilized citizens; The second is to bring moral education into a complete education system with all-round development of morality, intelligence, physique, beauty and labor. The author points out that the primary task of education is to develop students' intelligence. He believes that the main purpose of intellectual education is to develop intelligence, perfect teaching is to develop intelligence, and teaching is an important means of intellectual education. Knowledge and intelligence complement each other, knowledge ensures the best level of intellectual development, and the best level of intellectual development promotes the enhancement of the ability to master new knowledge. Cultivating and developing intelligence requires a colorful intellectual life. Classroom teaching is an important way to cultivate and develop students' intelligence, but it is not the only way.