The invention discloses a police three-dimensional GIS data intelligent application system. The system is composed of a data acquisition system, a data research and judgment system and a data application system. According to the invention, air-ground information superposition, accurate alarm pushing, accurate force delivery and tactical application optimization can be realized, digital library building, integrated sensing and large-scale application are formed, and a new synthetic combat mode of large system integration, large data integration and large command pattern is realized. According to the invention, multi-modal video information, a tactical analysis model and three-dimensional GIS data are used as supports; the situation, the occurrence mechanism and the evolution rule of the important warning situation site can be mastered in advance; event causal relationships and corresponding disposal strategies are rapidly deduced, online study, judgment, deployment, command and supervision are rapidly completed, a new synthetic combat mode of 'front emergency disposal and background data support 'is formed, risk management and control and three-dimensional prevention are completed in advance, and the system is a new police basic support type actual combat product.