In recent years, China has launched active exploration and practices in the aspects of the construction of ecological civilization and has made remarkable achievements. In this process, enterprises have played an important role in optimizing the economic growth, promoting energy-saving and emissionreduction, and spreading ecological culture. The paper analyzes the present situation and existing problems of current construction of ecological civilization of enterprises in China. On the basis of current situation of the construction of ecological civilization of enterprises in Beijing and in line with the industrial standard of CRISP-DM, the paper utilizes decision tree algorithm and researches the key elements which infl uence the enterprises’ willingness of the construction of ecological civilization. The research result shows that there are three key elements which infl uence the enterprises’ willingness of the construction of ecological civilization: enterprises’ average sales of the past three years, the categories of enterprises and enterprises’ principals’ cognition on the responsibility of the construction of ecological civilization; other two variables have no infl uence on the willingness: the ration of research and construction staff in enterprises and that whether enterprises are high-tech ones. Therefore, it is necessary that governments should take the lead to establish strong conception of ecological civilization among citizens, carry out vigorously the publicity and education of the construction of ecological civilization, enhance the cognition levels of enterprises’ principals and reduce the costs of the construction of ecological civilization. In recent years, China has launched active exploration and practices in the aspects of the construction of ecological civilization and has made remarkable achievements. In this process, enterprises have played an important role in optimizing the economic growth, promoting energy-saving and emission reduction, and spreading ecological culture. The paper analyzes the present situation and existing problems of current construction of ecological civilization of enterprises in China. On the basis of current situation of the construction of ecological civilization of enterprises in Beijing and in line with the industrial standard of CRISP- DM, the paper administered decision tree algorithm and researches the key elements which infl uence the enterprises ’willingness of the construction of ecological civilization. The research result shows that there are three key elements which infl uence the enterprises’ willingness of the construction of ecological civilization : enterprises’ average sales of the past three years, the categories of enterprises and enterprises ’principals’ cognition on the responsibility of the construction of ecological civilization; other two variables have no inflence on the willingness: the ration of research and construction staff in enterprises and that do enterprises are high -tech ones. Therefore, it is necessary that governments should take the lead to establish strong conception of ecological civilization among citizens, carry out vigorously the publicity and education of the construction of ecological civilization, enhance the cognition levels of enterprises’ principals and reduce the costs of the construction of ecological civilization.