Urban structure is along with the development of the human social history and product, which is the carrier of the human memory and history information. How to continue the historical context and interpret the human memory and construct the bright future of the cities will become the focus of the cities' developments. In the development of Hexi ancient town, how to protect the original urban structure, continue the city's historical context and protect the city's historical information and style, at the same time, improve the human settlements and make the new urban structure become "organic entry" the original structure, become the urgent reality problems paid attention to solving.%城市肌理是随着人类社会历史的发展而逐步演化的产物，是一个城市人文记忆和历史信息的载体，如何在城市肌理中延续城市的历史文脉，解读城市的人文记忆，构筑城市的美好未来，必然成为城市发展的重中之重。在河西古镇开发中如何保护原有城市肌理，延续城市的历史文脉，做到保护城市的历史信息和风貌特征的同时，又能改善人居环境，使新的城市肌理能够“有机切入”原有肌理，成为一个必须重视的现实问题。
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