Abstract: Yongshun’s laosicheng site is an ancient cultural site which has important research value preserved by the minority nationalities in our country.It had been ruled as a capital for more than 800 years by Peng Chieftain of the Tujia Nationality.In laosicheng site and adjacent regions,geologic time is old,geological structure is relatively stable,the shape of terrains and landforms are abundant,natural scenery is beautiful.The functional zoning and infrastructure of laosicheng is complete,and the construction pays full attention to harmony and unification between human and nature,and it use natural resources rationally.And the whole laosicheng site forms the unique urban landscape.

Key words: laosicheng site, geology, landforms, harmony