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Historic city, as the human settlement space developed in the earliest stage of a city, is the area that best demonstrates the profound cultural significance and urban spatial characteristics of a city. It is also an important and complex type in the field of international cultural heritage conservation. With China's rapid urbanization in the last 30 years, large numbers of Chinese cities are becoming victims of urban problems. Both urban managers and researchers in related fields are well aware that urban development in the new era needs to be coped with from the perspective of leveraging existing stocks. The historic areas of a city make up a valuable stock of land in the city and an important spatial resource. A series of research topics arise in its wake: how to best preserve the characteristics of their historic layout, and avoid losing their identity; how to present its distinctive style with meticulous care; and how to make up for their deficiencies in infrastructure, public service, and environmental quality etc., while stimulating and evoking pride from city managers and the people in their historic city. The application of three-dimensional oblique photogrammetry and GIS technology in historical cities has provided more intuitive graphic support, more accurate spatial positioning, and more convenient data query and statistics for the conservation and development of historical cities. These not only facilitate better research, planning and design for professionals, but also assists city managers to make more adequate decisions.

City is one of the main carrier of human life, with the advancement of urbanization, the urbanization process in China, environmental art design of the city more and more gets people's attention, and public facilities is a city urban comprehensive charm show platform. Excellent public facilities can create a new life form and environment experience for the whole city, which brings a richer experience and feel to people's life. In this paper, the design of public facilities in urban environmental art design is analyzed and discussed. In view of the problems of urban environmental art design, the application of public service facilities in urban environmental art design is studied. It also provides a set of feasible research ideas and methods through the study of environment and human experience. PUBLIC FACILITIES IN URBENSince ancient times, human beings have been constantly transforming the urban environment, and the design of public facilities has been formed with the development of the city. Public facilities as an organic part of a city, on the one hand, can reflect the city's overall development, highlight the city's unique culture and is also a public bond between the experience and the urban environment, in the whole city occupies very important position in the environment and social structure.Urban public facilities design, it is to point to meet the demand of the public, with art and culture of city public environment planning and design, and set up in the urban environment and public space has a certain culture, regional, artistic devices. The public facilities in the modern urban environment, on the basis of realizing their basic functions, will reflect the spirit and cultural connotation of the city together with the surrounding environment. Urban public facilities can not only show the economic strength of the city, but also convey the city's cultural and artistic information and embody the quality of life of urban citizens. With the development of China's largescale urbanization, public facilities will play an important role in the city. URBAN PUBLIC FACILITIES DESIGN Classification of urban public facilities designThe design of public facilities in urban environmental art design mainly includes nine categories according to its emphasis on function and research emphasis.