PURPOSE: The purpose of this study was to describe feelings and actions of nurses following withdrawal of life-sustaining treatment from children being cared for by the nurses. METHODS: Data were collected by in-depth interviews with 7 nurses from different hospitals where children receiving nursing care had life-sustaining treatment withdrawn. The interviews were conducted from August 2016 to February 2017 when all data were saturated. Interviews lasted 30~90 minutes and were conducted 2~3 times per participant. Data were analyzed using Giorgi's phenomenological research methodology. RESULTS: The following factors constituted experiences of nurses working in pediatric wards when life-sustaining treatment was withdrawn from children: “agony and conflict in the aspects of care”, “heavy mind and regret for exhausting care”, “intentionally avoiding parents' sadness”, “comforting sadness in the heart” and “orientation in the role of caring for children undergoing withdrawal of life-sustaining treatment.” CONCLUSION: Findings indicate that support systems and intervention programs need to be developed so that nurses can understand and wisely deal with experiences of withdrawal of life-sustaining treatment from children who receive care from nurses.