The organization and layout of the ancient Pingyao city are reviewed from the aspect of Chinese etiquette culture in this book. The city scale, city wall height and road width of the ancient Pingyao city were constructed by strictly complying with the principle of "three Li, three Zhi, three Gui (Li, Zhi and Gui are measurement units of ancient China)" respectively. In addition, the space of the old city layout, public buildings and dwelling courtyards were also deeply influenced by the etiquette culture. The Chinese etiquette culture and ideology has been complied with throughout the space layout design and the construction of the city, reflecting a theme of "five positions and four directions", "making the center outstanding", "strengthening the main axis", and "facing south as honor in the city's space organization and representation, which can be seen as a live fossil representing the influences of Chinese Etiquette Culture on city constructions in ancient China.