Objective To explore the training needs for clinical core competence of master of nursing specialist(MNS)from the perspective of supervisors,providing reference for the development of future MNS clinical practice training programs.Methods Using phenomenological research methods from qualitative research,purposive sampling was used to select 10 MNS supervisors from Jilin Province,Heilongjiang Province,Sichuan Province,and Zhejiang Province as research subjects for semi-structured interviews from May to July 2023.Colaizzi 7-step analysis method was used to extract themes.Results Six themes were extracted,including the need to strengthen MNS ideological and political education,differences in clinical training needs and ability goals between fresh and non-fresh students,the need to enhance MNS clinical practice ability,clinical research should be a key training content,thinking ability training should be integrated throughout the entire clinical training process,and achievement transformation.Conclusions Relevant training institutions should attach importance to the cultivation of MNS ideological and political education,specialized practical abilities,thinking abilities,clinical research,and achievement transformation abilities,distinguish the tendency of cultivating fresh and non-fresh students,and actively set up relevant courses to improve students'core competence and job competitiveness,and cultivate nursing expert talents that truly meet the needs of clinical development.