Abstract: Periglacial structures are widely distributed at Songliao plain in the Northeastern Region of China.Their common forms are:ice wedges,involutions and solifluctions.According to stratigraphical and chronological data,The periglacial stages have been divided as following: 1.Baitushan periglacial stage,characterized by the involutions developed in Baitushan formation.Paleomagnetic dating 3.4—3.0—1.7m.y.B.P. 2.Huangshan periglacial stage,characterized by the involutions and ice wedges developed in Huangshan formation.Paleomagnetic dating 1.2～1.0— 0.75m.y.B.P. 3.Donggang periglacial stage,characterized by the involutions developed in Donggang formation.Thermo-luminescent dating:0.2—0.15m.y.B.P. 4.Guxiangtun periglacial stage,characterized by the ice wedges and involutions developed in Guxiangtun formation and by the cold-loving fauna and flora:Mammuthus-Coelodonta fauna and dark coniferous forest flora and permafrost fauna in the same formation.C¹⁴ dating:70,000—10,000 years B.P. 5.Tailitu periglacial stage,characterized by the solifluction found near Tailitu village.It might occur in early Holocene. 6.Modern periglacial stage,characterized by the ice wedges and involutions filled by black soil.This stage might be corresponding to the little ice age.