With the development of cloud computing technology, evaluating cloud services in digital Library becomes top urgent. Based on the analytic hierarchy process (AHP), the paper designs a new user satisfaction model to evaluate cloud services in digital library. To obtain the relative important degree of evaluation indexes from estimators, the paper puts forward a new method to construct judgment matrix of AHP. Examples show that:1) the user satisfaction model can accurately locate cloud services that estimators urgently hope to improve; 2) the improved AHP algorithm can acquire index weight value from estimators, and help to improve the accuracy of user satisfaction.