Grey prediction and relativity analysis in grey system theory are used to predict the traffic accidents in the future three years in Taiyuan city according to the traffic accident census results of Taiyuan in recent years. At the same time
the major factors affacting the traffic accidents of Taiyuan and the traffic accident situation relatively have been analyzed. This way
the importance of each factor could be made clear and the work of the traffic management department could concentrate on some main problems so that the traffic accidents could be reduced.