| Knowledge updating circle is shrinking in the course of economy globalization and knowledge economy. More creative talents who can keep studying new knowledge are badly needed. Developing high level thinking skills is critical to develop learning ability. Furthermore, traditional teaching methods have been changed as computer and network technology found their place in education field, web-based education comes into being in line with the advance of computer network technology and new talent training target in 21st century. The process of web-based instruction is same to that of traditional instruction in nature: the instructive effect relies on class interaction. The traditional instructive process achieve class communication by instruction design, then obtain instruction target. In the same, it is necessary to design the web-based instructive interaction from the view of instruction design, and take full advantage of the Internet. Consequently, excellent performance of the web-based interaction can be reached. So it is very meaningful to the study of web-based interaction.We have discussed in turn the importance of web-based interaction, the definition and category of web-based instruction interaction, the interaction theory of web-based instruction, and put forward in particular four kinds of web-based interaction designs, such as question-enlightened, model-enlightened, experiment-researching and collaboration-discussion with practical surveys. The four kinds of interaction design all origin from practical instruction method and would be applied to web-based course of Chinese-medicine firstly. |