Abstract
This paper aims to describe the theoretical basis of the undergraduate’s graduation design in the new era, and to devise a “2T4D model” of college graduation design based on the knowledge management theory. According to the model, the college should focus on the roles of teacher and student, prefect hardware and software, make use of internal and external resource, and promote conversion between explicit and tacit knowledge. The model lets transformation between the two kinds of knowledge possible by collation, spreading and applying, and can ensure design quality.