Abstract: In order to obtain the features, trend change and evolution cycle of precipitation in Shenyang, the author utilized precipitation data during nearly 62 years from 1951 to 2012, divided data sequence into several sub-sequences, adopted a series of modern climate statistic and diagnostic techniques such as relevant test, linear trend fitting, anomalies accumulation and ordered clustering to analyze annual rainfall variation features. It was shown from the results that 62 years length sequences of annual gradually-increasing subsequence of precipitation in Shenyang were trending to decrease. As of 2012, the trending rate was -17.578 mm/10 a, the rainfall reduced by 109.0 mm; the precipitation trending rate changed insignificantly, in a non-significant rate. 1950s was abundant rainfall period, and made obvious impact on precipitation trends. 30 years moving average sequence reached the maximum values in 1953 to 1982 years; the rate was -84.822 mm/10 a. As for sequences in 1951 to 2012 years, in 1964 and 1975, the precipitation suddenly reduced by 116.2 mm and 70.8 mm respectively. 10 years to 12 years periodicity appeared in both rainy and dry years. Based on the results, the author presented new insights for further understanding to trends in precipitation resource in Shenyang, and provideed reference for weather, water conservancy and agricultural sectors.