In order to improve students' learning initiative, changing their identity from onlooker to protagonist, turning teacher's role from teaching to learning-assisting and tutoring, a activity diagram has been designed for the flipped classroom which is consist of pre-course and course and post-course. The micro video is both important teaching measure and major learning resource in the flipped classroom training. To perform effectively of the micro video, ten design principles have been presented. With two year practiced in ED...