A qualitative method was used in this study. The purpose of the study was to explore adolescent women’s experiences of the maternal role in postpartum. Eleven participants were obtained by purposive sampling of 16-19 year old adolescent women, and were interviewed on the 42nd day. The participants had given birth at over 37 weeks by natural spontaneous delivery without complications. Data collection was by tape-recorded semi-structured interviews in which participants described their experiences. Content analysis was used in the study. Intercoder reliability and content validity were examined to monitor the rigorousness of the methodology. The findings showed that the experiences of maternal role of adolescent women consisted of four elements: (1) uncertainty about bringing up the child; (2) dissatisfaction with their situation; (3) low competence of maternal behavior; (4) high tension concerning the maternal role. The findings of this study help nurses better understand the experience and provide some direction to assist adolescent women in motherhood adaptation and postpartum.