This paper focuses on the Liyuan blocks in Dabaodao area, Qingdao. Based on the map data collected in Qingdao Urban Construction Archives, libraries in Germany and Poland and other research materials, this paper analyzes the formation, development and transformation of urban blocks in Dabaodao area under German administraton. By analyzing the changes of the urban planning and the construction of Liyuan blocks in different years, we consider the formation, development and transformation process of Dabaodao area.