Abstract: Abstract：The authors used the field data, seismic data, coal field drilling data and paleontological data to compile and analyze the representative stratigraphic division schemes for the Dunhua basin-coal prospect area at peripheries of the Songliao basin, and got the following understandings： (1) the age of the Huichun Formation is Eocene-Oligocene;(2) the Upper Cretaceous Longjing Formation may not exist in the basin; (3) the upper member and lower member of the so-called Mao'ershan Formation should be assigned to the Quanshuicun Formation and Changcai Formation;(4) the Dalazi, Quanshuicun, Changcai and Tuntianying formations do exist in the basin, of which the Dalazi Formation and Changcai Formation might be Early Cretaceous Aptian-Albian and Berriasian-Aptian in age respectively according to the lithostratigraphic and biostratigraphic correlation between the Dunhua basin and its neighboring basins;(5) the wrong uses of some local formation names at several sites of the basin are revised; and (6) a stratigraphic sequence is established in the Dunhua basin, which may be used for reference at present.