Abstract
The " Bijing Bao " is the only well-reserved Bao as of a traditional civil dwelling colony in Pingyao County, China. As a heritage of ancestor's wisdom, it deserves respect and to be well studied. This research is initiated for culture succession, Bao's protection and future repair. By analyzing the classification and characteristics in regards to entrance arrangement, courtyard sections and symmetry, area scale, length-width ratio of courtyards in Bijing Bao's, the conclusion is that the entrance arrangement is flexible but different from traditional construction model in north China; the courtyards show a high symmetry feature, which complies with the characteristics of traditional construction in north China; the construction hierarchy represents an emphasized ranking distinction in planning originally; the larger the occupied area of the courtyards, the higher percentages of the courtyards positioned along the axis to south.