Abstract: Objective: To explore the effects of standardized nursing training on nurses' self-directed learning capability in Beijing municipal hospitals. Methods: Convenience sampling method was used to recruit all the new nurses in 2014 from three standardized pilot training hospitals and other three non-pilot training hospitals in Beijing. The self-designed questionnaires were used to evaluate the nurses' self-directed learning capability before and after the intervention.Results: After the one-year standardized training, the mean score of self-directed learning capability of nurses from pilot standardized training hospitals was improved from (125.21±17.82) to (130.31±16.87), and higher than that of the non-pilot hospital nurses (125.80±16.04), the difference was statistically significant (P<0.05). No significant difference was found in the subgroup of nurses with bachelor degree or above. The subgroup of nurses with qualifications showed an improved scores of core competence (P<0.05). Conclusion: Standardized training had a positive effect on the self-directed learning capability of nurses, especially for nurses with lower education level.