Abstract: Assessment on the environmental impact of surface water is one of the methods in the development of green economy. The quantity of surface water is a representation of the environment. Based on the State Criterion of Surface Water Environmental Quality (GB3838-2002), the author monitors the water quality of the Taipinghe reach of Luoqingjiang River in Lingui County, Guangxi Region, to analyses the current water quality and provide the basic information for the regional economic development and the environmental evaluation.