Due to the continuous development of urbanization, it had a serious impact on urban ecology. Therefore, techniques to improve the living environment and quality of life in urban areas as well as ways to improve aesthetics and greening of urban gardens have gradually become the focus of attention. Re-building and arranging the green plant community rationally can effectively improve the quality of people's living environment. Besides, by maximizing ecological functions, it can better improve the quality of urban environmental. This paper introduces key technologies of green planting construction in urban landscaping projects and suggest ways to improve the urban ecological environment by viewing it from existing problems in the current urban ecological environment.