BackgroundDeath preparedness in patients with advanced cancer is an important prerequisite for improving the quality of death. However, there are insufficient studies on death preparedness in patients with advanced cancer, and the level of death preparedness needs to be further improved.AimTo develop a model of death preparedness in patients with advanced cancer.MethodsA qualitative approach with grounded theory was used. Data were collected between February 2024 and July 2024 in the oncology wards of the two general hospitals in Wuhan. We recruited 12 patients, 11 family members, 16 nurses and 4 doctors for semistructured interviews. Data analysis included open coding, axial coding and selective coding. The study is reported using the COREQ checklist.ResultsDeath preparedness in patients with advanced cancer is a spiralling process whose core components include death awareness, emotional response, hospice programme and reflexive care, and multiple personal, interpersonal and social factors influence it.ConclusionA model of death preparedness in advanced cancer patients was constructed through rooted theory, revealing its formation and change process. This model deepens the understanding of death preparedness and helps healthcare providers identify patients' preparedness status in advance to provide more targeted support and care. This personalised care enhances patients' quality of life and reduces the psychological burden on them and their families, achieving more comprehensive and humanised end‐of‐life care.ImpactTo better understand patients' death preparedness, healthcare providers should focus on patients' cognitive, emotional, behavioural and social needs in the process of death preparation from a multifactorial perspective, and provide targeted support and assistance.No Patient or Public Contributions were included in this paper.