Purpose: This study was to develop a clinical competence scale to assess competence of nursing students in postpartum bleeding care in the simulation-based clinical situations. Methods: The assessment items developed with 12 items of 3 point scale. An expert panel of 3 maternity professor reviewed the scale for content validity by using the CVI(Content Validity Index). Following the establishment of content validity, 12 items of the checklist were developed. The simulation-based postpartum hemorrhage nursing education that consisted of four sessions for 6 hours lecture and practice was provided to 32 small groups. Result: The total mean score of clinical competence in postpartum hemorrhage care was 17.34. Items with the highest mean score was 1.88 with ‘introduce myself to the patient'. Items with lowest mean score was 0.19 with 'assess the general conditions'. Reliability of between two evaluation using Cronbach's alpha was .86. Conclusion: This results show postpartum hemorrhage access tool developed this study had reliability and validity. Further studies are needed to determine property of tool in postpartum hemorrhage access tool.