The digital resources construction of college library is important for the development of college, therefore it is necessary to evaluate it base on an effective evaluation method, and the application of fuzzy analytic hierarchy process on it is studied in depth. Firstly, the meaning of performance evaluation of digital construction of college library is discussed; Secondly, the digital resource performance evaluation index system is constructed; Thirdly, the analysis procedure of fuzzy analytic hierarchy process and confirming model of index weight based on fuzzy analytic hierarchy process are given. Finally, a cased study is carried out, results show that the fuzzy analytic hierarchy process is an effective method for performance evaluation of digital resources of college library.