In view of the traditional communication system scheme selection methods are difficult to deal with the issue of inconsistent indicators dimension. This paper puts forward the fuzzy modified DEA evaluation model. First, the communication system evaluation index system model was established. Then DEA evaluation model was founded, meanwhile the introduction of input “preferences” and the introduction of fuzzy membership degree the output fuzzy correction. Finial, simulation results show that the model evaluation result not only have the objectivity assessment of communication system scheme, but also reflect the decision maker’s subjective assessment. The model for optimization of communication system schemes provides a sensible solution.