Communication Principles is a compulsory course for the specialty of the Electronic Information Engineering, which has various concepts, nonrepresen tationae theories and broad content. In order to improve the students' ability of analyzing and solving problems, according to the modular ideas, a web-based Communication Principles teaching system is designed in this article. This system adopts multimedia technology and homepage design tools, and it reforms the course contents, the teaching methods and the learning concepts of students. The teac...