Background: The impact of subjective norms on nurses’ intention about FCC has not been uniform across the globe. The role of family in child health care in the past 4 decades has changed completely. In the 1940 s and 1950s, parents were not enrolled in the child care. Family-centered care as one of the basic concept s of pediatric nursing in the 21st century remains. Aims: This research investigates the relationship between the subjective norms and its impact on family-centered care intention among pediatric nurses in Iran. Material& Methods: A qusi –experimental study design was used on a sample of 200 pediatric nurses in two groups in pediatric nurses. Respondents were selected based on simple random sampling. Results: The result of Pearson Correlation showed that this variable was significantly correlated with intention (Pre-test= 0.497**), (post-test= 0.697**) & (follow–up test= 0.635**). Conclusion: The results say that, there is significant relationship between the subjective norms and to implementation family-centered care intention among the nurses in Iran.