As the first batch of undergraduate-level vocational education pilot colleges, Chongqing Vocational and Technical University of Mechatronics actively participates in the talent training practice of undergraduate-level vocational education, based on the characteristics of "undergraduate education in level and vocational education in type". First of all, through the transformation of talent training goals, the differences and connections between vocational undergraduates and vocational colleges and ordinary undergraduates are discussed, and the positioning of the training goals of undergraduate vocational education talents is found. Second, the undergraduate-level vocational education talent training system is constructed from four aspects:faculty, practical teaching, professional teaching, and skills training. Finally, take the engineering cost specialty of Chongqing Vocational and Technical University of Mechatronics as an example to carry out undergraduate level vocational education talent training practice. Through this talent training practice, a modular curriculum based on job ability was set up; the "1+X" certificate system was incorporated into the curriculum teaching and evaluation system for the first time, it promoted the reform of digital and intelligent online teaching models for engineering cost specialty.