Purpose: The purpose of this study was to describe the nursing unit manager's experience with patient safety accidents. Methods: Data were collected from April, 2017 to December, 2017 through in-depth interviews with seven unit managers who worked in General wards, OPD or in the ICU of a general hospital. Qualitative content analysis method was used to analyze the data. Results: The following four categories were elicited; dimensions are different from each other, complex feelings about the person after the accident, ambivalence for the accident triggers, leadership learned from accident management. Conclusion: The findings provided valuable informations on the nursing unit managers' experience with patient safety accidents, which held many nursing implications. Based on the findings, it is possible to develop accident management guidelines and the support system for accident management personnels.