Abstract: In order to promote the construction of "new engineering" in Colleges and universities and optimize the talent training mode, a top-level design model of "four innovative talents' quality" is proposed, which is characterized by "cooperative consciousness, innovative thinking, scientific research level and engineering practice ability". Combined with the national demand for the comprehensive quality of innovative talents, based on the "vertical" development principle of knowledge, ability, quality and personality, a three-dimensional ecological system of "value goal, education system and resource construction" is constructed to cultivate engineering application-oriented compound talents. Guided by the "Challenge Cup" and other college students' innovation and entrepreneurship competitions, the reform of the second classroom education and teaching under the background of "new engineering" has been carried out, and the innovation training mode with the closed-loop structure of production learning research competition has been formed and verified.

Key words: "New engineering" construction, Extracurricular science and technology competition, Second classroom, Talent cultivation ecosystem