Purpose As a malignant tumor with high mortality, spinal malignant tumors often cause great trauma to patients and accompany low quality of life. Whether or not to inform patients of their condition has always been controversial in the medical community. This retrospective cohort study investigated the association between disease awareness and survival time in patients with spinal malignant tumors.Methods 129 patients with spinal malignant tumors were enrolled between January 2016 and December 2022, including 40 primary spinal tumors and 89 spinal metastases. The potential factors influencing spinal malignant tumor survival were registered, including disease awareness, age, gender, education level, pathological type, treatment, smoking history, drinking history, and survival time. All participants were followed up every 6 months until August 2023.Results In August 2023, 76 (58.9%) patients died, and 53 (41.0%) patients still survived. The 3-year survival rate of patients with primary spinal tumors was 70.4%, and that of patients with spinal metastases was 22.1%, with a median survival time (MST) of 12 months (95% confidence interval [CI], 9.69–14.31). Among the 129 participants, 16(12.4%) did not know their condition at all, 34(26.3%) only knew their diagnosis, 79(61.2%) knew not only their diagnosis but also the treatment and prognosis of the disease, and younger and more educated Patients with primary spinal tumors were more likely to have a complete understanding of the disease. Cox regression analysis showed that awareness of the disease (hazard ratio, 0.214;95% CI, 0.091–0.504; P < 0.001) and education level (hazard ratio,0.322;95% CI, 0.104–0.995; P < 0.05) were independent influencing factors for survival in patients with primary spinal tumors. However, the same results were not found in patients with spinal metastases.Conclusion A complete understanding of cancer knowledge may contribute to the better survival of patients with primary spinal tumors. Therefore, Medical staff could provide Patient Decision Aid for patients with primary spinal tumors to improve their disease cognition, achieve shared decision-making, and enhance the therapeutic effect, survival rate, and quality of life. At the same time, physicians should respect patients' cultural preferences and individual differences for patients with spinal metastases. In addition, medical staff should provide psychological support and education for patients and their families while encouraging patients to adopt positive coping strategies.