Purpose: This study was to identify relationship between instructor and learner's evaluation in the simulation-based maternity nursing. Methods: The simulation-based nursing education program was taken by 112 fourth year nursing students. 30 item clinical practice competency evaluation tool has been developed for instructor. And 30 item clinical practice competency scale(self reported form) was used for students. Result: The critical items of the simulation-based maternity nursing were suggested in this study. Mean score for clinical practice competency are as follows: student's evaluation 4.0(on a 5-point scale), instructor's evaluation 76.7(on a total 90-point). There was a positive correlation between instructor and learner's evaluation score. Conclusion: These findings will be useful guideline in development direction of qualitative simulation-based nursing education program.