Based on the cultivation of students'' core quality, leading students to make photorefractive cards, operate and observe interesting optical experiments can not only stimulate students'' interest in actively exploring nature, guide students to discover the process of optical knowledge, but also cultivate students'' practical application ability and good moral character, achieve the goal of both teaching and educating people, and further improve teachers'' education and teaching ability and teaching research ability, So that teachers can achieve the goal of teaching and learning.