Abstract: A case study of summarizing how a Quality Control Circle (QCC) team at a hospital in Taiwan has played an important role to carry on TQM activities to improve services are presented. The activities of QCC practices were recorded and described step by step to continuously improve organizational performance by providing the participants and supervisor in identifying, analyzing and solving problems. With the team efforts, the objective of reducing the rate of errors in drug prescriptions was achieved successfully to yield better organizational performance. The standardized process was implemented to provide better services for its patients. Moreover, the participants in this QCC team felt that responsibility and concentration have been improved most among the eight factors. This study has depicted how a QCC team is helpful and practical to improve organizational performance in a hospital. In addition, the procedures conducted by this QCC team were clearly stated to provide insights for those who are interested in QCC.