Abstract:Based on the meteorological and hydrological data of 22 meteorological stations and 3 hydrological stations in Guanzhong area of Shaanxi Province from 1961 to 2016, the standardized precipitation evapotranspiration index(SPEI)and streamflow drought index(SDI)at different time scales were calculated. The Gumbel Copula function was used to construct the meteorology-hydrology drought index(MHDI), and the applicability of MHDI was discussed. The spatial and temporal distribution characteristics of meteorological and hydrological comprehensive drought were analyzed. The results show that MHDI combines the advantages of SPEI and SDI, and can characterize meteorological drought and hydrological drought on both monthly and annual scales. The MHDI sequence values in Guanzhong area show a significant downward trend, and the drought situation increases year by year. There are variations in MDHI sequence, and anual scale variation points are concentrated in 1986 and 1990. The main period of annual MHDI sequence values is mostly concentrated in 20-22 years. The frequency of drought is the lowest in Jinghe River Basin(19. 11%), the highest in Beiluo River Basin(47. 97%), and 26. 42% in Weihe River Basin.