Teachers' professional development is an important factor to improve the quality of teaching in colleges and universities. At present, teachers' professional development in colleges and universities mainly focuses on teacher training and consultation, lacking personalized attention to teachers' professional development. With the development of technology, the construction of a professional development platform for teachers based on the concept of self-directed learning provides a new perspective on teachers' professional development. This paper first analyzes the design ideas of a University's teacher professional development platform, and systematically describes how to integrate teachers' learning resources, build teaching portfolios and build online communication communities under the guidance of the self-oriented concept from the perspective of different sessions of data aggregation, self-development and teaching promotion. Then, after analyzing the application of the platform, the results show that the construction of a professional development platform based on the concept of self-directed learning plays an important role in supporting teachers' personalized development paths, promoting teachers' reflection on teaching, and building learning communities. [For the full proceedings, see ED638044.]