The paper used the data from 6 meteorological stations in central and northern areas of Yunnan from 1954 to 2012,and selected standardized index to calculate drought index of each site,and analyzed drought years and frequency of occurrence of different drought occurred in the period of 1954 to 2012 in north central area of Yunnan. The research results show that the Lincang station appears more drought years, the year number of extreme drought appeared in Mengzi station is higher than that in other 5 stations; the drought frequency each site is different in different seasons. The drought frequency in Tengchong in spring is higher than that in other 5 stations and reaches 35.6%. The drought frequencies are the greatest in Lincang station in summer and winter, and are 35.6% and 37.9% respectively. The drought frequency in Mengzi station in autumn is 34.8% which is the maximum.The research can provide a certain reference for drought evaluation and protection of water resources in central and northern area of Yunnan.