Abstract: Based on the Climatic Research Unit (CRU) reanalysis dataset,a trend analysis method and the Mann-Kendall trend test method were used to analyze the variation trend and sharply change feature of precipitation in Lishui.The characteristics of precipitation cycle were studied based on the Morlet wavelet transform method and a Multi-Taper method (MTM),and significant period signals were reconstructed in order to further explore its variation trend.The results show that annual precipitation from 1901 to 2015 increases slightly by 8.41 mm/10 a,and there is a mutation in annual precipitation between 1962 and 1963.The Morlet wavelet analysis results indicate that a 20-a decadal precipitation cycle and two inter-annual precipitation cycles of 4.0-8.0 a and 2.0-4.0 a are significant in Lishui during the whole study period,especially the cycle of 2.0-4.0 a with a significance level of P<0.01.The precipitation cycle with the strongest oscillation in Lishui is 2.5 a,followed by 2.1 a and 4.1 a,according to the MTM analysis.