Background <p>Gestational diabetes mellitus (GDM) is a common pregnancy complication that poses challenges to both maternal and fetal health. Effective management requires addressing patients’ varying needs throughout pregnancy and postpartum. This study aims to explore the multi-dimensional health management needs of women with GDM through patient journey mapping, to provide evidence for optimizing integrated care.</p> Methods <p>A qualitative study was conducted involving 32 women diagnosed with GDM, recruited via purposive sampling. Data were collected through semi-structured interviews guided by the Patient Safety Systems Engineering Initiative (SEIPS) 3.0 model. Content analysis and patient journey mapping were used to analyse the data.</p> Results <p>The health management needs of women with GDM were categorised across tasks, emotions, and pain points according to the diagnosis and treatment timelines. A total of 21 subcategories were identified through content analysis, reflecting key aspects such as emotional distress due to poor glycaemic control, challenges in dietary management, and the influence of family support. These findings were integrated into a comprehensive patient journey map illustrating participants’ evolving needs and experiences across different stages of care.</p> Conclusions <p>Patient journey mapping highlights key opportunities to optimise care processes and resource allocation. Enhancing healthcare professional roles and social support, alongside integrating digital health tools, may improve patient experience, self-management, and long-term outcomes.</p>