The invention provides a mobile multimedia teaching system which comprises a main control CPU, an audio processing module, a video processing module, a display and a wireless router. The main control CPU comprises a CPU, a hard drive, a radiator and expansion interfaces. The main control CPU is connected with the video processing module, the audio processing module, a router, a temperature sensor, a humidity sensor, the wireless router and the display through the expansion interfaces. According to the mobile multimedia teaching system provided by the invention, a number of intelligent parts are integrated into a whole body; all devices can be controlled through a touch screen; the system has the advantages of easy operation, high integration and multiple functions; a processor is connected with a fingerprint reader and a fire alarm; the safety of the teaching system is improved; in the event of a fire, a user is able to understand the situation the first time and take appropriate measures; air temperature and humidity within a classroom can be monitored in real time; and the system has the advantages of multiple functions, easy use and high intelligence.