The utility model discloses a car alarm system based on video identification, including vehicle event data recorder, video identification module, micro - processing module, wireless communication module and acousto -optic warning module, wherein: vehicle event data recorder is used for real -time recording video information, the input of video identification module links to each other with vehicle event data recorder's output to be used for carrying out analysis, processing to the data of vehicle event data recorder output, input micro - processing module with the result simultaneously, wireless communication module and acousto -optic warning module are connected respectively to micro - processing module's output for result control wireless communication module according to the video identification module communicates with user terminal, or alarm signal is sent to control acousto -optic warning module. The utility model discloses an analysis is carried out to the video information around the vehicle to the video identification function, and then carries out effective recognition, prediction to abnormal conditions for the car owner in time makes corresponding security, reduces car owner loss of property with the maximize.