Under the influence of natural and human activities, the hydrological results of the Songliao basin have greatly changed. The original runoff series in the Songliao Basin was made to the year of 2000 while the flood series was only made to the year of 1998. The current hydrological design results of the basin have not been able to respond to the ongoing hydrological situation in the basin. The Songliao Water Resources Commission, in accordance with the requirements of the revision of the hydrological design results for the Songliao basin, has carried out the revision of the hydrological design results for the Songliao basin and rechecked the hydrological design results of the 63 hydrometry stations and engineering points selected in the Songliao Basins, and the series were extended to the year of 2010 (the seires for the river basins of Heilongjiang, Songhuajiang and Hunjiang were extended to the year of 2013). The design runoff and design flood results were reviewed respectively, and the changes of hydrological results in the Songliao basin over the past 10 years were analyzed.