According to the research and analysis of road noise outside the city park green space, park boundary noise is of vehicle engine noise, tire noise, wind noise, resulting in more or less impact on recreational park. If the plant landscape on the edge of park green space can not only quickly reduce noise, but also show the beauty of park, which will have great benefit on the utilization of the park. The visual effects of plant landscape and ecological benefits are fused in the garden plants, so the function of plant landscape in many aspects will be showed by a design. To park greenbelt of Beijing(green space surrounded by urban roads) boundary of a same object orientation, through the investigation and research about the width range of plant type, planting density and configuration, we can find the most efficient plant configuration to attenuate the noise. These plant communities can not only effectively reduce the traffic noise, create a more quiet garden environment, but also can beautify the urban environment, reflect and form the local characteristics of plants. According to the noise reduction efficiency, these samples were sorted and SBE beauty degree was used to measure the community landscape effect of best plant configurations, obtained by the corresponding index evaluation and analysis of boundary of plant community color beauty degree of the measured boundary park plant community. Based on the above two optimal forms of plant configuration, to balance and inference, and form a judgment under the same conditions such as width, multi-row small trees or low shrubs not only play a good effect of reducing the noise, but also enrich the ornamental effect of the edge of road; or as many rows of trees as possible in the cropping pattern, in which grass and shrub are mixed planting to form some comfortable spatial effect and so on. It can provide scientific evidence for molding the landscape of Beijing and similar large-scale urban green space.