Abstract: Objective To analyze the occurrence of adverse events following immunization(AEFI)of Bacille Calmette-Guerin vaccine(BCG)among neonates in IPMCH, and to evaluate the safety of BCG. Methods Data on BCG AEFI in 2010-2013 were collected through national AEFI information system. The descriptive methodology was used in this study. Results During 2010-2013, the coverage rate of the BCG vaccine among neonates in IPMCH was 95.19%. And 21 BCG AEFI cases vaccinated were reported, with a reporting rate of 430.86 per 1 million doses, most of which were BCG lymphadenitis(20 cases with the incidence of 410.34 per 1 million doses). Conclusion The coverage rate of the BCG vaccination among neonates in IPMCH remained at high level. BCG vaccine proved safe. Most of rare vaccine reactions were BCG lymphadenitis, and the reporting rate of BCG lymphadenitis were lower than expected.