The aim of this study was to examine the childhood trauma experiences and current happiness levels of nursing students. The quantitative part of the study was carried out with 349 student nurses and the qualitative part with 25 student nurses. An explanatory-sequential mixed methods design was used. Data were collected using Demographic Information Form, Childhood Trauma Questionnaire-Short Form, Oxford Happiness Questionnaire-Short Form and semi-structured Interview Form between November 2020 and September 2021. Quantitative data were analysed using descriptive statistics with the SAS 9.4 package program. Transcribed qualitative data were analysed using Braun and Clarke’s six stage thematic analysis approach, and this was performed with the MAXQDA 2020 package program. In the quantitative section, it was determined that as the participants’ childhood traumatic experiences increased, their happiness levels decreased. In the qualitative section six themes were formed (Childhood Trauma, Effects of Childhood Trauma, Coping with Childhood Trauma, Growing Up After Trauma, Perceptions of Future Parenting, Empowerment Through Nursing Education). It was determined that participants had various childhood traumatic experiences and mostly been exposed to emotional neglect. Some of the participants' childhood traumas continued to affect them in adulthood, and nursing education contributed to coping with trauma and raising awareness about it.