Moocs are large-scale open online courses, which are distributed on the Internet and published by individuals with the spirit of sharing and collaboration in order to enhance the dissemination of knowledge。The teachers of Tsinghua Affiliated High School have a deep understanding of the nature of MOOCs from the aspects of technology, education and teaching, students' ability, and curriculum needs, and have conceived and designed courses. Kou Zheng, a teacher of Tsinghua High School, won the first prize in the National "Micro Video" Competition organized by C20 MOOC Alliance。"Flipped classroom teaching mode" means that students complete knowledge learning at home, and the classroom becomes a place for interaction between teachers and students and between students, including answering questions and solving doubts, applying knowledge, etc., so as to achieve better education results。The practice of MOOCs and flipped classrooms is to improve the teaching efficiency, improve the teaching effect, and make technology fully serve for teaching。