The study investigated the indicators for information service system performance measurement through the review on the related literatures, and developed 16 indicators for the performance measurement in 4 areas of library visit, lending, reference service and user instruction, and electronic service. And then with the indicators, the study surveyed 6 academic libraries including each 2 of large, middle, and small sized academic libraries. Based on the survey results, the study made a proposal for the application of performance indicator and the improvement of information service system performance.