The invention discloses an intelligent classroom teaching multifunctional system based on intelligent video, and belongs to the field of intelligent teaching management. The system comprises a camera, a control center server, a measurement and control module, an infrared sensor, a light-sensitive sensor, a temperature sensor, electrical equipment, a relay switch, a multimedia computer, a display and a manual switch. By combining intelligent video analysis and single-chip microcomputer control, common problems in university classrooms are solved, including waste of electricity, absence from class, early dismissal, playing with mobile phones, cheating in the exam, and difficulty in listening to the teacher for students at the back of a large classroom. By using a real-time intelligent video analysis technology, the anti-interference ability of the system is enhanced. The method is simple and reliable, efficient, and highly applicable. By employing the existing classroom monitoring system and hardware such as multimedia computers, the system is of low cost, and is economic and practical. With the system, problems in multifunctional classroom teaching can be handled intelligently. The system can be widely used in classroom teaching in various colleges and universities.