Diagnostic method is used to analyze the climate features of precipitation anomalies in Northeast China in recent 50 years.Results indicate that precipitation of Northeast China has obvious seasonal change,with magnitude anomalies occurring in summer (June to August),especially in July and August and that the anomalies peak month has rather obvious decade change.In the recent 50 years,summer rainfall anomalies in the study area exhibit remarkable interannual(interdecadal) variation period of 3.1 years(12.5 years,26～28 years and 4～6 years).The distribution of rainfall anomalies in NE China is in(out of) phase with that in North China(the Huaihe River and the middle-low reaches of the Yangtze River.Distribution of summer precipitation anomalies of Northeast China shows consistence and is coherent to distribution of summer precipitation anomalies of China in 1950s,1970s and 1990s,there is area difference in 1960s and 1980s.