The evaluation of environmental credit for specific industries is an important development link of enterprise environmental credit research in China. Based on the existing standards of environmental credit evaluation in China, this paper constructs the environmental evaluation index of the target project of the construction enterprise based on the characteristics of the construction industry and the method of AHP, quantitative analysis and comparative analysis, which provides a reference for the environmental management of the construction industry. Finally, through the analysis on eight projects of China Construction Second Engineering Bureau LTD. and China Construction fifth Engineering Bureau LTD., it turns that although the environmental credit scores fluctuation, but the overall trend is rising.