Abstract: By analyzing the meteorological observational data of dust storms from 1952 to 1994, the intensity division standards are put forward, the features of spatial and temporal distribution are studied. The results show the regions easy for the occurrences of dust storms, and high frequency regions and high frequency periods of dust storm genesis in Northwest China. All of these would provide the basis for establishing the integrated monitoring system of dust storms and the systematic engineering of disasters prevention and disasters reduction.