Objective To explore the mediating effect of perception of hospital magnetism on the relationship between growth mindset and team job crafting behaviors among junior nurses, and to provide insights for nursing management.Methods A convenience sampling method was used to select 611 junior nurses from four affiliated hospitals of Harbin Medical University between February and April 2024.Data were collected using a general information questionnaire, the Team Job Crafting Scale for Nurses, the Nurses′ Growth Mindset Assessment Scale, and the Essentials of Magnetism Scale.Results The junior nurses scored (38.93±6.37) points in team job crafting, (105.44±17.36) points in growth mindset, and (99.69±24.30) points in perception of hospital magnetism, respectively, indicating moderate levels in each domain.A significant positive correlation was found between team job crafting， and both hospital magnetism perception and growth mindset (all P＜0.5).Perception of hospital magnetism played a partial mediating role in the effect of growth mindset on team job crafting, accounting for 43.18% of the total effect.Conclusion Perception of hospital magnetism serves as a mediator between junior nurses′ growth mindset and team job crafting behaviors.Nursing managers should focus on fostering a growth mindset and enhancing hospital magnetism perception to help junior nurses better integrate into teams and contribute to team job crafting.