中文摘要：

形成于1300多年前大昭寺初建时期的拉萨老城区，有着完善的路网结构、空间秩序和建筑形式等级，阐明了老城独特的空间形态，虽历经沧桑，如今依然较完整地保留着藏族传统城市聚居地区的历史风貌，保留着完整的城市形态，是目前拉萨市中心保存状况最好的历史文化保护区。

英文摘要：

In the 7th century,Lhasa emerged on the Qinghai-Tibet Plateau together with the growth and spread of Buddhism. Nearly 14 centuries Later,Buddhism played a key role in the development of Lhasa City. The Jokhang Temple,located on Barkhor Square in Lhasa,formed the core of the religious settlements in the ancient city district of Lhasa. By analyzing the road network structure, space order and grade of architectural forms, the writers clarify the unique spatial form of the ancient city district of Lhasa and study on the causes of formation of urban spatial morphology.