Objective To understand the influencing factors and coping style of pediatric specialist nurses experiencing moral distress in their work，and to provide reference for alleviating the moral distress of pediatric nurses. Methods Phenomenological research method was used to conduct sem-structured interviews with 13 pediatric specialist nurses in Zhejiang Province from March to June 2022. Colaizzi phenomenological research analysis method was used to analyze the interview data. Results Two topics and eight sub-topics were formed after the interview contents were extracted，coded，cluster screened，interpreted and verified. The factors affecting the moral distress experienced by pediatric emergency and critical care nurses included the children level，the family level，the nurse level，and the working environment level. The coping style included increasing caring nursing behavior，trying to communicate effectively，self-psychological adjustment，and seeking organizational helps. Conclusion Pediatric specialist nurses suffer from moral distress caused by various influences，we should focus on the needs of children，promote doctor-patient communication，improve nursing position，increase team magnetism to ease the moral distress in the work of pediatric nurses.