The study of national historical and cultural cities is an academic field to systematically study and protect China's historical and cultural cities. This research direction aims to deeply explore and understand the historical background, cultural connotation and protection value of China's famous historical and cultural cities, and provide scientific basis and guidance for urban planning, cultural heritage protection and tourism development.

In the study of national historical and cultural cities, the following contents are often involved:

Urban history and culture: study the historical evolution, cultural inheritance and distinctive characteristics of the city. This includes the study of the origin, historical development, architectural style and cultural heritage of the city.

Urban planning and protection: study urban planning layout, spatial structure and protection measures. This includes the historical evolution of urban planning, cultural protection policies, protection planning and design.

Protection of cultural heritage: study the protection and management of historical buildings, cultural relics and traditional crafts in cities. This includes research on cultural relics restoration, protection technology, management policy and community participation.

Tourism development and management: study how to transform historical and cultural cities into tourism resources and realize sustainable tourism development and management. This includes tourism planning, marketing strategy, tourist experience and the development of cultural tourism industry.

Social influence and sustainable development: study the influence of historical and cultural cities on society, economy and environment, and how to realize the sustainable development of cities. This includes social identity, city image, development of cultural industry and quality of life of residents.

Through the study of national famous historical and cultural cities, we can deeply explore the historical and cultural value of cities, promote the sustainable development of cities, protect and inherit historical and cultural heritage, and promote the development of tourism and economic prosperity. This research is of great significance to inherit and carry forward China's excellent traditional culture and enhance the city's image and attractiveness.