Abstract:Yangzhou was selected as the research area in order to study the characteristics of runoff pollution in different types of urban green. Five different types of urban green such as park green, residential green, industrial green, cultural and educational green and road green were selected to collect runoff rainwater samples to test the concentration of typical pollutants.The results show that water pollution exists in runoff of different types of urban green, among which road green and industrial green are seriously polluted, park green and residential green are next, cultural and educational green is the least polluted. First flush effect of urban green is not strong, most pollutants present moderate first flush effect. The occurrence of pollutants in different types of urban green is different. Among them, TN, Zn and Pb mainly exist in granular state, while COD and TP mainly exist in dissolved state.