中国的建筑体系是世界各民族数千年文化史中一个独特的建筑体系。在中国五千年历史发展过程中,中国的劳动人民运用他们的聪明与智慧,创造出了一批又一批优秀的建筑,并发展出一系列成熟的建筑体系。纳西族作为中华民族的一分子,在几千的发展历史中,创造了辉煌的民族文化,有着丰富的独具特色的建筑遗产,在各民族的建筑体系中独树一帜。纳西族传统民居建筑,具有独自的特点,是汉文化穿斗式结构谱系,其营造技术具有很高的水准,房屋构造的各部分都有审美的要求和鉴定标准。一些古代建筑或是以古建筑风格为主的近现代建筑是纳西族历史的重要见证,保护这类风格的建筑,也就是保护民族的历史,是现代人义不容辞的任务。本文以丽江古城建筑本体为例,提出笔者对数据采集重要性的认识、指出数据采集的历程,在此基础上展望探索利用三维激光扫描系统对遗产建筑本进行扫描、处理和存储,从而用于在后续研究中对其数字化保护系统开发的工作,方便建筑本体的管理和研究。 China’s architecture system is a unique architectural system in the cultural history of thousands of years of all ethnic groups in the world. During the five-thousand-year history of China, the working people in China used their intelligence and wisdom to create a series of excellent buildings and developed a series of mature building systems. As a part of the Chinese nation, the Naxi Nationality has created a splendid national culture in the history of thousands of development and has rich and unique architectural heritage, which is unique in the architecture system of all ethnic groups. Naxi traditional residential buildings, with its own unique features, are Chinese culture, wear-through structure pedigree, its construction technology has a high standard, each part of the housing structure has the aesthetic requirements and identification standards. Some ancient buildings or modern architecture mainly based on the ancient architectural style are the important testimonies of the history of the Naxi people. It is an unspeakable task for the modern people to protect such kind of architecture, that is, to protect the history of the nation. Taking the ontology of Lijiang Ancient City as an example, this paper puts forward the author’s understanding of the importance of data collection and points out the process of data collection. Based on this, I hope to explore the use of 3D laser scanning system to scan, process and store the building materials, In the follow-up study of its digital protection system development work, to facilitate the management and research of building ontology.