Abstract: The HVAC course is based on the Superstar one-level and three-terminal intelligent teaching system, which deeply integrates modern information technology with classroom teaching and carries out the teaching model reform of "Internet + classroom". This kind of blended teaching makes the teaching method more diversified and greatly improves the teaching efficiency. Big data results based on platform have purposeful teaching improvement, which can further promote the classroom teaching reform; "Internet + Classroom" makes communication zero distance. Teachers and students can communicate "at anytime and from anywhere", which greatly reduces the space and time of communication and improves the timeliness. In addition, it can further stimulate students' enthusiasm and initiative in learning, so that students' ability of independent learning can be further improved.