The Kangjiatun city-site is located 0.5km north of the Xiaobotai Gully at Kangjiatunvillage in Beipiao city, western Liaoning, lying on the second terrace on the southern bank of the DalingRiver, and belongs to the Lower Xiajiadian culture. In 1997-2000, it was continuously excavated in atotal area of 8,500 sq m, which resulted in the revelation of city walls, defensive projections along citywalls, a moat, and countyard walls, stone-paved roads, house-foundations, stone-built pits, “stone cases”, etc. in the city. According to stratigraphical evidence, including the superimposition and intrusion ofbuildings, the city-site can be divided into three phases. The excavation brought to light not only pottery,stone, bone and other artifacts, but also rather clear conditions of the layout and structure of the buildings in the city during the middle and late phases. Thus the site provides important data for studying theshape, layout and structure of city-sites in the Lower Xiajiadian culture, as well as human living and so-ial form in those cities.