The Research Status of microplastic pollution in terrestrial water environment was deseribed. The microplastic pollution sources such as tail water from wastewater treatment plant (WWTP) and overflow of drainage systems were discussed. Then the ecological risks caused by microplastics were summarized. Analysis shows that urban aquatic ecological environment is the main source of microplastics in terrestrial environment. The key to achieve the effective control of microplastic pollution is identifying the source and risk of microplastic pollution in urban water ecological environment.