本文采用改进的DEA模型对开发者效率进行评估，主要通过传统的C2R模型和模糊数学法相结合，形成新的 模糊DEA模型。该方法克服了传统DEA模型的超强客观因素和不支持模糊输入输出，有利于提高开发者效率的评估，这对 决策者而言是十分重要的。

In this paper, we evaluate the developer's efficiency by an improved DEA model. It combines the traditional C2R model and fuzzy mathematics, which forms a new fuzzy DEA model. The model overcomes the strong objective factors in the traditional DEA model and it doesn’t support fuzzy input and output. It is conducive to improve the developer efficiency, which is very important for decision makers.