With private car ownership increased substantially, traffic safety concern, although there are traffic lights to control traffic but still can not avoid the occurrence of traffic accidents, this paper designs a traffic intelligent broadcast system, firstly gives the hardware structure diagram of the system, the hardware circuit of the system is designed, then the intelligent broadcast system software is designed, finally the experimental results the combination of hardware and software are given, which shows that the intelligent broadcast system in this paper is simple and convenient and good performance, can successfully run the result.