Background: Nursing, as a professional and academic discipline, requires the development of a distinct body of knowledge applicable to nursing practice. The development of nursing competency is significant to improve the quality of nursing services and meet the requirements of health care needs. Objectives: This study aimed to explore how the model of nursing competency development can be used, and its implications for nursing organizations, nursing education, implications for the healthcare system and policy are discussed. Results and conclusion: The proposed model provides a comprehensive framework for the changing processes from existing competencies to the needed competencies. To apply the Model of Competency Development effectively to support nurses moving from the existing competencies to the needed competencies as expected to fill out the gaps, several steps are implicated