A method for preventing serious weather disasters includes steps of: (A) finding an area, where cloud layers which are thick are gathered, by a conventional meteorological technology； (B) defining an artificial rain position with a highest density, thickness or temperature in the cloud layers； and (C) setting one or more artificial rain bands with a strip shape at the artificial rain position, and providing artificial rain, in such a manner that clouds to which the artificial rain are provided is cooled to rain； temperatures, densities and measurements of the cloud layers are lowered； and hot air below the cloud layers is released； wherein the clouds after being cooled flow to and cool hot clouds nearby, so as to rain one after another, thus eliminating natural conditions for forming the serious weather disasters.
