In this paper, the technical methods for inspecting the early warning signals of meteorological disasters (heavy rain, snowstorm, fog, gale, hail and lightning, etc.) are studied according to the operational technical specifications. Taking a week, a month, a quarter, half a year and a year as statistical periods, the accuracy and leading time of meteorological disaster early-warning signals issued by meteorological departments in Guizhou Province are analyzed objectively. It can provide technical supports for improving the quality of meteorological disaster warning signals and standardized management.