OBJECTIVES A BCMA system was introduced to the hospital in June 2012. The purpose of this study is to evaluate the impact of the BCMA system on reducing medication errors and nurse and pharmacist satisfaction with the system. METHODS The nurse satisfaction questionnaire and the pharmacist satisfaction questionnaire for the overall system were designed by 8 experts using content validity index (CVI). Medication error rates before and after the implementation of the BCMA system was compared. We also collected the numbers of phone calls for tracking stat drugs from Oct 2^nd to Nov 15^th in 2012. RESULTS After the implementation of the BCMA system, the medication error rate was significantly reduced from 0.18% to 0.12% (p < 0.05). Pharmacists agreed that the BCMA system provides assistance in tracking prescriptions (90%), identifying medications (60%), and reducing medication errors (53%). However, pharmacists also think that the system has increased their routine workload (57%). Nurses agreed that the BCMA system can improve patient identification (73%), administration of right medication (57%), medication administration time (47%), and access to correct prescription/medication information (42%). Both pharmacists and nurses were dissatisfied with the stability of the system (53%, 69%) and poor barcode sensitivity (47%, 64%). From Oct 2^nd to Nov 15^th in 2012, we received 469 phone calls. The average of tracing call for drugs is 1.67 times every hour. CONCLUSIONS BCMA system significantly decreases medication error rate in the hospital. It is recognized to be able to improve medication safety by both pharmacists and nurses. Improving the quality of associated computer equipment is the next important step.