Abstract:At present,a structural form with local regulations and administrative rules as the main body has been formed for the legal system on the conservation of historical architecture in China. On the basis of differentiating connotation for historical architecture and retracing the evolution of its conservation,the temporal and spatial distribution,legal rank evolution and content structure model of the local regulations are summarized; Based on the study of 10 cases,the key parts of the four modules are analyzed deeply,including the identification of objectives,conservation methods and measures,management and supporting mechanism. The following conclusions are proposed: Under the context of lacking laws and regulations nationally,hidden dangers of law enforcement dispute would be presence for the loss of conservational laws and regulations in the sequence; The coordination and development of historical architecture in national level would be hindered by regional differences such as that in the identification; The integration on built heritage would be hindered by the differences between "historical architecture" and "relics architecture" in qualification and management. In the context of comprehensive promotion of administering a country according to law,the legal system on the conservation of historical architecture needs to be improved urgently.