To resolve the problems of the lack of systematicness and standardization of teaching content, the great dependence on off campus practice resources, and the low learning initiative of students in the production practice of building environment and energy application engineering specialty, the project driven immersion teaching mode of production practice course was put forward. Based on the actual HVAC engineering situation as the carrier, the knowledge of construction management, intelligent operation and maintenance, etc., is systematically connected in series with all element knowledge points of the HVAC system. Students play the role of various types of work in the production process, deeply immerse in the teaching process, and become the main body of active practice and knowledge exploration. The specific implementation process, teaching content, process and diversified scores formation mechanism of the project driven immersion teaching in production practice course were explicated. Moreover, it is clarified that the project driven immersion teaching mode of the production practice course can fully stimulate students' interest in actively participating in the practice, which make the students become the main body of the production practice, truly achieve the combination of theory and practice, exercise hands-on skills and strengthen theoretical knowledge, and also help to cultivate the spirit of labor.