. With the rapid development of information technology and the popularization of the Internet, the modern educational technology represented by multimedia teaching has become the development and reformation direction of modern teaching methods thus making the development and application of multimedia courseware in classroom teaching the inevitable choice for modern education. People generally consider multimedia courseware as the teaching courseware of organic combination of multiple media such as picture, style, sound, animation and video frequency, etc. However, they have neglected the most active factor throughout the multimedia, namely, interactivity. As classroom teaching-based multimedia courseware is characterized by interactive design, realizing the interaction function of student and computer, teacher and student is in request of discussing the interactive design thinking and production method of multimedia courseware and illustrating interactive design technology of courseware with certain system and structure. The interactivity of multimedia courseware in teaching should be comprehensively analyzed from the description of learning resources and teaching system so as to attain better teaching effect and serve for optimizing classroom multimedia teaching methods.