"This study aims to examine the effectiveness of using scenario-based communication training to improve the nurses’communication skills in assisting breastfeeding in the obstetric ward. This study adopted a quasi-experimental design. From December 2018 to December 2019, 36 nurses in the obstetric ward were selected as the subject of the scenario-based communication training. The head nurse and a nurse with experiences in leading breastfeeding peer support groups were the instructors. The effectiveness of the study was measured by comparing nurses’communication skills in assisting breastfeeding before and after the intervention. The results showed that scenario-based communication training does greatly improve both nurses’self-confidence and communication skills in assisting breastfeeding. In addition, the satisfaction of primiparas is significantly improved. The study results confirmed that after the intervention (scenario-based communication training), the nurses can understand the needs and feelings of the parturient through role-playing. Also, they can observe that verbal and non-verbal communication are helpful for their reflection. Through observational learning and positive attitudes, the nurses can enhance their self-confidence and communication skills in assisting breastfeeding. Furthermore, the satisfaction of mothers regarding nursing care rises. In the future, in addition to holding regular scenario-based communication training (which helps nurses to maintain the proficiency of communication skills and thus improves patients’satisfaction and avoids medical disputes), clinical teaching plans can be drawn from the needs of mothers so that the nurses can be more empathic and thus understand the feelings of the parturient and provide positive encouragement and support. In this way, the parturient may show more confidence in their maternal role, which can also help improve their connections with the child. On the other hand, nurses may achieve greater sense of accomplishment in clinical care, which can help cultivate a more professional and qualified medical care."