With the rapid development of social economy and the accelerating of urbanization process, urban scale expands rapidly, the urban population increase rapid too, the task of city management is increasingly onerous; At the same time, the traditional urban management mode has exposed the low management efficiency, management measures gradually, such as they can not meet the needs of the new situation fully and restricted the continuous improvement of management level of the city. this article, taking as an example of huainan city expounds how to apply modern science and technology , the construction of digital urban management, in order to provide urban safety management improve .