As the key to ensure the quality of higher education, the ideological and political education of college students is of great significance to improving the comprehensive quality and competitiveness of top talents so that they can better service the society and promote social development. Through analysis of the problems in the performance evaluation of college students’ ideological and political education, this paper unveils an improved performance evaluation index system and fuzzy evaluation model. Firstly, the author discusses the perspective of constructing the evaluation index system, and outlines the perspective of constructing the performance evaluation index system of ideological and political education; secondly, the author selects evaluation indices by analyzing the principle of index selection, and constructs a hierarchal performance evaluation index system of college students’ ideological and political education on the basis of the selected indices; thirdly, based on the theory of fuzzy mathematics, the author establishes a fuzzy evaluation model of college students’ ideological and political education which gives full consideration to the evaluation indices, realizing the quantitative analysis of the performance of college students’ ideological and political education; finally, the author summarizes the features and looks at the prospects of the evaluation index system and the evaluation model.