The purpose of this study is to identify how premature baby's mothers recognize the baby in NICU as her child and how they develop their affectional bond from mother's viewpoint. Interviews with semi-structured questionnaire were conducted with 5 mothers who delivered premature baby in NICU, and then the data were analyzed by the qualitative descriptive method. "My baby and I: Developing Our Affectional Bond" was identified as the leading process from interviewee's experiences. The process was distinguished into four steps which represented different levels of relationship between the mother and the child. 1 ) My baby is struggling to survive and all I can do is watch from outside. 2 ) My baby is growing and he/she recognized me as his mother. 3 ) My baby is real and I can care for my baby. 4 ) My baby and I are alive together. 'We are part of each other'. Maternal-child bond is developed through these steps. The mother realized herself as the mother of the baby as she accepted her baby's presence by holding him/her in her arms and also by taking care of him/her. Early in this process, the mother of premature baby was not able to accept her baby's presence because her baby lacked in activities. By touching and holding her baby did she realized that her baby was actually alive. By watching her baby grow and by learning how to care for him/her, she developed more affachment to her baby. Finally, the mother came to recognize her stronger bond as she realized that her baby was no different from all the other normal babies.