The multimedia courseware is widely used in teaching, the flipped classroom is nowadays much concerned about the teaching mode.In the flipped classroom teaching mode, the function and design of multimedia courseware should be emphasized that the students on the line and pre class active learning, the knowledge teaching process ahead of time, from the teacher to the students to take the initiative to obtain. By applying the theory of "structure - deconstruction" into multimedia courseware design, to subdivide the knowledge that" deconstruction "to form a learning list in the courseware to micro teaching unit were presented; In order to solve the problem of the form, the micro teaching unit integration, namely the knowledge of the structure".