The present invention provides a three-dimensional emergency command method and system on the basis of a GIS. The method comprises: collecting emergency scene, meteorology, geography and power grid information in real time, and analyzing preset format data; and storing each types of data, integrating the types of accidents and relevant information to automatically generate an emergency strategy, and performing interaction query after integrating the emergency scene, meteorology, geography and power grid information to provide decision basis for emergency commands. The three-dimensional emergency command method and system on the basis of a GIS is able to perform dynamic collection presentation and linkage interaction query of multi-source data in a three-dimensional scene so as to realize three-dimensional panorama tracking of a first-aid repair task and visually represent the first-aid repair progress of each task, therefore the efficiency of the emergency first-aid repair work and the capability of processing power grid faults are improved, and the urban emergency first-aid repair command scheduling capability is also is improved.