Currently in the bilingual practical teaching, Main topics about teaching methods, textbooks, examination methods, experiments and so on are largely involved in research, but some technical factors are seldom noticed. As a matter of fact, some advanced teaching assistant techniques are important parts of bilingual practical teaching. The paper includes three technical factors, development of multimedia courseware, construction of course website and design of examination system. Functions, characteristics and noteworthy development issues of those factors are discussed according to our experiences of bilingual computer courses. Some useful experiences and suggestions are proposed. Those experiences produce initial effectiveness in our national bilingual demonstrative course "Delphi advanced computer programming technology".