The method of fuzzy evaluation based on group consistency intensity is proposed for the quantitative evaluation problem of fuzzy information through researching the problem of multiple attributes decision making. The interval values of evaluation can be synthesized by using the Dempster-Shafer theory and transformed to certain value by using the concept of linguistic discount factor. Meanwhile, the group consistency intensity is used to determine the value of linguistic discount factor, which can reflect the mainstream opinions in the assessment. Finally, the instance of trusted software evaluation is analyzed to verify that the proposed method can solve the analysis and synthesis of fuzzy evaluation information effectively.