The key problems of the green degree evaluation of equipment manufacturing enterprises are the establishment of the evaluation index and the distribution of the weights. This research has developed a software for maintaining the evaluation system and weighing the input calculating system，which are based on the designed green degree evaluation index system and overall merit mathematics model for the equipment manufacturing industry，and also designed a weighing fuzzy input and calculating method qualitatively and quantitatively. The decision makers could adjust the number of indicators in real time，change index name and adjust weighing differential，and also suit the need of different kind of enterprises. This research also established the regress tactic and arithmetic that matched the features of the weighing samples and discussed the weighing distributing tactics which led to the conclusion that pre -installing the reference value in weighing input tools made the samples normal and the weighing desired value rational. Finally, this research designed the process of the evaluation which provides a new idea for green degree evaluation.