Abstract: In view of the poor results of learning output in the cognition practice of metal material engineering, we explore the transformation from single mode of visiting practice to multi-dimension synergistic model. A network of friends composed of students, school instructors and alumni mentors is built through the network teaching platform. Small-class, small-group and delicacy management are implemented in the course of teaching and practicing. Timely communication and sharing between teachers and students, and effective answers to questions and doubts from students, are responsible for the significant satisfaction of students about cognition practice.