Abstract: In order to evaluate the dust absorption ability of urban garden green space on the suspended particulate matters in the air, and reduce the harm of these particulate matters to human health, atmospheric pollutants dry settling flux model and exposure-response relation model were used for quantitative assessment of the total amount of PM₁₀ and PM_2.5 absorbed by garden plants in Shijiazhuang City and the health benefits of garden green space in 2013. The results of the survey showed that: in Shijiazhuang City, garden plants’ adsorption amount of PM₁₀ was 13813.4 t/a and PM_2.5 was 6974.6 t/a in 2013, which reduced the mortality by 11.58 person/day and the respiratory system disease morbidity by 32.12 person/day, and could be converted to 1.95 billion yuan in economic value and was 4.3‰ of the gross national product (GNP). The results could provide a theoretical basis for the research on absorption ability of landscape plants on atmospheric particulate matter, optimizing the human living environment and urban landscape planning.