Some spatial patterns of precipitation have been studied,the catastrophic points modeling technique has been adopted to study the characteristics of precipitation evolution in Northeast China,and the dry-wet transition times have been computed.Results show that 1)the most typical pattern of precipitation has the dry-wet consistency in all regions,while the other typical patterns show the dry-wet difference between the south and north parts or between east and west parts of the region;2)the new modeling technique is stable to obtain the characteristics of precipitation evolution;3)for most areas and stations in Northeast China,the dry-to-wet transition time is longer than the wet-to-dry transition time,indicating that Northeast China is susceptible to drought.