The invention relates to crossing traffic information inquiring system and method based on multimedia messages. The system mainly comprises an image acquisition and processing device, a wireless transmit-receive communication device, a control device and a main processor. Crossing traffic images are collected in real time, and instant image information is sent to mobile phone client users which need the instant image information and accord with the transmission condition through wireless transmission, the client users receive the information in a multimedia message mode, which is convenient for users going out to know the road condition of the passing crossing in real time.