The purpose of this article is to share the experiences of the development and describe the contents of the model framework for competency development of nurses within the context of Vietnam. A qualitative study, ethnographic approach was conducted on 41 participants who are nurses, other healthcare professionals and relevant stakeholders. Data collection methods were participant-observation, in-depth interviews and focus group discussion. Qualitative content analysis model was used for analyzing the data. The Model of Competency Development of Nurses was developed from the results generated from research that identified the gaps among the three competencies, including needed competencies of clinical practice nurses, core competencies of Vietnamese nurses which is considered as national competency standards, and existing competencies of clinical practice nurses; factors influencing competency development; and journey of competency development of nurses. The Model is expected to provide process of changing competencies of nurses practicing in clinical context from existing competencies to needed competencies, which considered the ultimate goal of competency of nurses.