The invention discloses a meteorological power equipment user-defined layer display processing method and system. The method includes: connecting meteorological data which are monitored in realtime and prewarned into a power grid GIS platform, positioning power equipment and a meteorological monitoring station in the power grid GIS platform, and positioning coordinates of the meteorological monitoring station into a power grid GIS map; creating an equipment layer and a meteorological layer in the power grid GIS map respectively according to positioning information of the power equipment and the meteorological monitoring station, and stacking the meteorological layer and the equipment layer; dividing according to municipal and prefectural administrative regions or large regions to form various user-defined layers, and taking the user-defined layers as blueprints to display meteorological information of the meteorological layer and the equipment layer. Monitoring and prewarning of natural disasters and emergent events can be realized by taking dynamic correlation of meteorological-power equipment as a basis through layer display, and disaster loss can be reduced to greatest extent.