In order to explore how to carry out professional construction through professional assessment in local colleges and universities, this paper puts forward a method of promoting professional construction with professional certification. The method elaborates from the aspects of the formulation and implementation of talent cultivation plan, the cultivation of professional core competence, the construction of modular curriculum, the establishment of multi-level practice teaching system according to the Beijing municipal colleges and universities undergraduate professional evaluation index system and computer science and technology professional positioning. Results show that the method provides a reference for the construction of computer science and technology in local colleges and universities.