Abstract: Under the background of high-density urban development, many public spaces in China are adjacent to roads, and traffic noise seriously affects the space quality. The construction of soundscape focusing on improving perceptual experience has gradually become a consensus, and the emotional dimension of soundscape is an important evaluation parameter. By taking Zhongshan Park in Dalian city as a sample, which is divided into the internal area and the area adjacent to road, the questionnaire survey and data analysis is completed according to ISO 12913. It is found that, unlike European researches, the first soundscape dimension of public space in China is the sense of "event" rather than "pleasure". The soundscape of the area adjacent to road tends to be "strong event sense" and "unpleasant", and the internal area tends to be "strong event sense" and "relatively pleasant". The correlation between ISO soundscape dimension and sound pressure level index is significant but not strong, indicating that the two parameters reflect the characteristics of sound environment from different aspects. However, their combination can evaluate the soundscape of urban public space in a more scientific way. This research can provide a reference for the optimization design of the adjacent to road.