The invention discloses a collective lesson preparation management system and method based on a smart class teaching system. The smart class teaching system comprises a teaching system, an LED displaysystem, a staff attendance system, an asset management system, a light control system, a door frame monitoring system, a ventilation and air exchange system and a video monitoring system. The complete lesson preparation process of collective lesson preparation comprises primary lesson preparation, collective communication, formation of a teaching plan and personalized processing of the teaching plan. The process is scientific and reasonable and safe and convenient to use. The collective lesson preparation is an important part of school-based teaching and research and is a lesson preparation form for realizing interactive teaching of teachers and carrying out study on teaching methods, gives full play to collective wisdom, achieves knowledge sharing and complementary advantages, improves education theory level of teachers, especially young teachers, and scientific research ability of the teacher, enhances the awareness of teamwork of the teachers and promotes the development of teachers' professional ability, thereby creating a good teaching and research atmosphere.