Objective To explore the influencing factors of the implementation of trans-department nursing care under intra-hospital bed allocation policies. Methods With phenomenological method, ten nurses were enrolled by purposive sampling method, and joined face-to-face and semi-structured interviews with researchers. Interview data were analyzed by Colaizzi′s 7-step analysis method. Results Four themes were extracted: there was a lack of systematic training support mechanism; trans-department treatment system remained to be strengthened; there were poor doctor-nurse cooperation across departments; trans-department nursing performance-based salary distribution was not transparent. Conclusion In the process of intra-hospital bed allocation, the implementation of trans-department nursing care was hindered by multiple factors. Measures including ramping up trans-department trainings, improving the trans-department treatment system, strengthening the cooperation between doctors and nurses,carrying out performance-based salary distribution for nurses, should be sought to realize the homogeneity of nursing care across varied departments and promote efficient bed management.