Abstract: This paper applied the variogram of geostatistics to analyze the spatial and temporal distribution of the Cangshan eighteen creek precipitation using time series of Dali meteorological stations' data of monthly mean precipitation from 1951—2013.The results showed that there existed two main oscillation cycle patterns with different timescales in monthly mean precipitation and the precipitation of the studied area was reduced annually,and entered a new low rainfall period after 2009.The season of rainfall was mainly concentrated from May to October,and the sparse season was mainly concentrated from November to April in next year.The spatial distribution of monthly precipitation showed the characteristics of the obvious regional gap.The region of abundant rainfall concentrated in the central valley near the Erhai and the narrow area in the east of Cangshan.