Abstract: In order to explore the relationship between the occurrence frequency of soundscape and its restorative benefits in urban leisure green space and determine the optimal function model, starting from the relationship between soundscape and human health, a study has been carried out by taking 5 urban leisure green spaces in Fuzhou as an example. The soundscape restorative evaluation system by analytic hierarchy process (AHP) is constructed, then the objective data and the restorative subjective scores of the occurrence frequency of soundscape in the research areas are obtained by sound walk experiments, and 12 kinds of function models are selected to combine the subjective and objective data for establishing relationship model. The results show that there is a significant negative correlation between the occurrence frequency of artificial sound and its restorative benefits (-0.815), while there is a significant positive correlation between the biological sound and geophysical sound and their corresponding restorative benefits (0.874, 0.888). The function model with the best fitting degree is the ternary linear regression equation model (0.789). Based on this model, the objective data of the occurrence frequency of soundscape in urban leisure green space can be transformed into the subjective value of restorative feeling in sound environment. Then, by the comprehensive garden design means, the corresponding suggestions of soundscape environment restorative construction and optimization are proposed. It is expected to provide ideas and data support for future research on the correlation between sound environment and human health.