Abstract of Introduction to Urban Public Space Art; Due to the development of society. The agglomeration of population has formed the pattern of urbanization. People need to communicate. Reviewing the cultural context of the development of public art and analyzing the relationship between urban public art and the public, natural environment and cultural background have aroused widespread concern in society. Keywords; The art and environment of urban public space, the humanized design principle of urban public space art, the design of public space should meet people's psychological, visual and spiritual needs, and the artistry and openness of urban public space. People need to communicate. Practical and decorative public space facilities. I. The concept of urban public space The so-called urban public space refers to the open space between building entities in a city or urban agglomeration, and is an open place for urban residents to engage in public communication activities. Urban open space can be divided into public space, semi-public space and private space according to its ownership nature. At the same time, it is an important place for human beings to exchange material, energy and information with nature, and it is also an important embodiment of the city image. The creation of urban public space is to provide a stage for people's outdoor activities, and life in urban space is more meaningful than urban space itself. Human beings need communication, which is the basis of the formation of public space. Because of the rich and colorful life style of human beings, it is inevitable to require cities as carriers to provide various suitable places. For cities, these places are just urban public spaces. It has the characteristics of openness, openness, public participation and recognition. It is precisely because of the openness of public space art that the creation of urban public space art has specific language requirements, that is, the openness of art form, the popularity of art realization situation and the comprehensiveness of design.

Second, the art and environment of urban public space The environment of urban public space ceremony can be divided into natural environment and humanistic environment. The natural environment is the pen of nature. Since ancient times, human beings have adapted to the natural environment. The ancient people in China should make use of the natural environment in the ideal artistic conception. "Respect, study, imitate and blend in with nature" has become the concept of modern design. Therefore, today's public space should pay attention to the characteristics of natural attributes. Advocate the perfect combination of man-made environment and natural environment; The differences in geographical location, natural environment, history, culture, religion and folk customs of a region have formed the characteristics of different regions. These factors constitute the cultural environment of urban public space art and study the interactive relationship between public space art creation and cultural environment. This kind of interaction is embodied in the creation of cultural environment, which can strengthen the characteristics of places, convey social and cultural significance, trigger the sound and association of environmental users, make art works, public space art interact with the environment, and stimulate the vitality and vitality of the environment. So it created a cultural environment. Its existence enables people living in such an environment to appreciate its spirit, thus generating spiritual communication, and integrating it into their own lives to gain lessons. It can show history, people's living habits and cultural background. Make it have a humanized taste and make people feel kind.

Third, the practicality and decoration of urban public space. When designing public space, we need to analyze its characteristics, functions and functions. Practical public space is a space in the classification of public space, which serves the public and shows its concern for the public. Practical urban public space art is closely related to people's lives, and its convenience meets people's daily needs. Therefore, the functional design of such facilities is the first, and the materials, structure and visual experience have been repeatedly adjusted and tested to make them conform to people's usage habits and visual psychological habits. Talk about public facilities; Sidewalks, overpasses, underpasses, lighting facilities, guardrails, signs, windows, bus shelters, telephone booths, newsstands, mailboxes, seats, etc. Decorative public space art is an artistic creation that matches the environment. It is the main performance situation of urban public space art, so we should pay attention to our own artistic value, which is essentially the embodiment of humanization of environmental design and has great value in the city. The placement of artistic works in each public space is not an isolated decoration, and the relationship with other environments should be considered, not just squares, streets, parks, etc. Have different personalities. Its decorative effect should meet people's psychological needs.

Fourth, the humanized design principle of urban public space 1, in today's increasingly rich material, people often ignore the spiritual needs and the quality of spiritual life, and the proper walking, shopping, leisure, conversation and sightseeing in urban public space are ignored. Urban space presents a tendency of "valuing others but neglecting oneself": people feel that without their own space, public space becomes meaningless without people's use, and people cannot enjoy it physically and mentally. People are the main body of the city. Only when the design of urban space is people-oriented and adapts to the scale, speed and comfort of people can the vitality of space be fully displayed. Urban public space is essentially the focus of urban life, which relieves people's mental stress and satisfies people's desire for nature. 2. Throughout the history of human development, urban public space must take "human scale" as the basic scale of space, creating conditions for human activities and exchanges. In addition, the form and layout of pedestrian environment facilities, such as chairs, sculptures, amusement facilities, etc. , should meet the diversity requirements of users, try to create a sense of closeness and warmth, meet people's psychological needs, encourage people to actively use and participate, and show concern for special groups such as children, the elderly and the disabled. Those small and exquisite public spaces close to residents often give people a sense of security, comfort, intimacy and human touch, and become popular places for activities. It also constitutes the humanistic characteristics of the city. Every city "grows" in a certain natural environment. Urban public art is closely related to citizens' life, the historical formation and development of the city and the visual nature of the environment. It is inextricably linked with regional culture, ethnic distribution and local customs. So cities have different personalities, personalities and styles. Different space places in the same city have different place spirit because of the differences in scale and function and the types of people's activities. Urban design should take the unique nature, economy, humanities, history, topography and local culture of the city as the creative source, conform to the natural topography and climate conditions of the region, fully tap and make use of the humanistic and historical resources of the city, and integrate various material and cultural characteristics of the city into the spatial composition through the application of composition rules such as unity and change, scale and proportion, coordination and contrast, balance and prominence. Form a distinctive and distinctive theme. This space is full of knowledge, artistry, interest and sociality, which enriches the cultural connotation of the city, makes people in it have a strong sense of identity and belonging, and becomes people's memory symbol. This is a dynamic and humanized space. Most human activities are carried out in public space. In order to meet the needs of people's various behaviors in public space, public space art came into being. 4. The design meets the needs and hobbies of the general public, and there is a two-way interactive relationship between people and the environment. Studying people's behavior or activities in urban public places is an important condition for doing a good job in urban design. Therefore, people's activities in public open space tend to be diversified. Take the square called "city living room" as an example, the square can accommodate many activities, including assembly, commemoration, performance, exercise, leisure, viewing, walking, browsing, entertainment, conversation, shopping and so on. These activities took place in the square at a different time than the people who participated. Different city residents have different preferences for different activities, so they have formed their own "square culture" in different areas. For example, some city squares in Europe have outdoor cafes, and some city squares in China have become places for children to fly kites. These facilities not only have the function of meeting people's basic living needs, but also have the decorative and intentional characteristics of meeting people's emotional needs.

The artistry of urban public space art is the reflection of human civilized life. Urban public space art is an artistic creation that matches the environment in the future, and it is the main realization form of urban public space art. The creation of such works pays attention to its own artistic value, but it is influenced and restricted by the environment. The subject of artistic spirit must surpass the satisfaction of material subject. Everyone is busy for survival and wealth, life is superficial, work is stylized, culture is fragmented, and people and nature, people and their own spiritual alienation. The artistry of urban public space is of great value in cities. It can adjust people's cognition, education, aesthetics and psychology, thus optimizing the spiritual ecology in line with the relationship between man and nature and creating the spiritual space of human nature. It also plays the role of transforming people's emotions and experiences, and these public space arts strive to give full play to the creative spirit of art and the social aesthetic education function, guide the public to a higher artistic realm, and undertake the beautification function of improving the overall visual relationship, because the artistry and publicity of urban public spaces are unified. Urban public space should have a dialogue with the overall environment, history and context of the city, and provide a space for citizens to display public will, maintain urban emotions and create a harmonious spirit. People not only rely on vision to perceive the world, but also accept external stimuli through various senses. Obviously, there is a preference for vision in the environmental design of modern urban public space, which leads to the neglect of other perceptual needs. Ignoring the sense of body undoubtedly limits human space. The image of environment is not the only sensory experience. The concept of space design that ignores multiple sensory experiences has restricted the improvement of design level and the innovation of ideas. People need to know the environment through feeling and are eager to get aesthetic feeling from the surrounding environment. Urban public space environment not only gives the public the right of visual perception, but also gives people the opportunity to know the environment through physical feelings and get pleasure. Therefore, people not only need the environment to become a visual art, but also hope that it has tangible beauty. Seek the beauty of knowledge and external environment. Therefore, the design of urban public space art should pay attention to the harmony with the surrounding environment and the artistic perception of audiences in different directions in the work field.

Summarize; The complexity of people's activities determines the diversity of the nature of public space. The openness of urban public space art includes not only the visual openness of multi-level and multi-post, but also the openness of different aesthetic tastes of viewers. Therefore, the creation of urban public space art is comprehensive, and its functionality should be considered comprehensively. Humanistic theme, environmental protection concept, publicity, environmental protection concept, material selection, and psychological and emotional impact on the public. This comprehensive feature is influenced by visual psychology, architecture, environmental chromatics, optics, folklore and so on. In short, the creation of urban public space is an activity for artists to build a harmonious "bridge" between the environment and the public. In the current construction of urban public space in China, urban public space has been paid more and more attention. Therefore, designers should consider the internal needs of human beings, meet human needs in the performance characteristics of urban space, the brewing, planning, construction, design, use, maintenance and transformation of public space, and design, interact and manage the aesthetic significance of space in order to realize urban public space. Only in this way can the art of urban public space truly reflect its value.