The ancient capital features of Beijing is first discussed andthen some misunderstandings in this field analysed. The necessity of the features preservation is expounded and proved with the view of sustainable development. Three aspects, which great attention should be paid to are provided: preservation of traditional streets, preservation of rivers and lakes, preservation of green environment.%从古都风貌的特点入手，分析了目前在对待古都风貌问题上存在的错误认识和实践中的一些误区，然后用可持续发展的观点论证了保护古都风貌的必要性，并提出了古都风貌保护中值得注意的3个方面：传统街区的保护；河湖水系的保护；绿化环境的保护
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