Based on analyzing the components of meteorology drought indexes,agriculture drought indexes and dynamic monitoring indexes which are used in drought monitoring and service,this paper discussed the principle and mechanism of these indexes and the application effects in different areas.

Using the research results of four aspects on meteorological drought indices,agricultural drought indices, hydrological drought indices and socio-economic drought indices did the analyses,and the main problems in stud- ying drought indices and the prospect were put forward.

Zoning study for the frangibility of agricultural drought in Hu nan Province;

Overview of meteorological and agricultural drought indices;

The studies on precipitation and agricultural drought in Siping City;

Application of fractal theory in forecasting the drought index in the west of Jilin Province;

Analysis on the application of drought index in the dry-farming region of east Qinghai;

this paper introduces the calculation of the drought index of the various stations at monthly and annually based on the precipitation and evaporation data of each delegating station between 1966-2005.

The changing characteristics of temperature,rainfall and aridity index in recent 40 years in Shihezi region were analyzed in this paper.