Objective: To assess the quality of life of patients with advanced cancer in palliative therapy and in palliative care. Materials and Methods: Quantitative, observational, cross-sectional, and analytic study conducted in a teaching hospital in Paraná, Brazil, from January to June 2018, with 126 patients: 107 in palliative therapy; 19 in exclusive palliative care. The questionnaires for data collection were: Quality of Life Questionnaire-Core 15-Palliative, Functional Assessment of Chronic Illness Therapy-Palliative Care 14, and Edmonton Symptom Assessment System. The Spearman non-parametric coefficient test was used for the analysis. Results: The overall quality of life in palliative therapy and in palliative care was, respectively, 71.54/59.65; when correlating the total score of quality of life of the Quality of Life Questionnaire-Core 15-Palliative with the Functional Assessment of Chronic Illness Therapy-Palliative Care 14 (p = 0.001), and the Edmonton Symptom Assessment System (p = 0.001), significant difference of better quality of life was observed in the palliative therapy. Conclusion: Patients in palliative therapy have good overall quality of life, while the palliative care group reports regular quality of life. The symptoms were milder in the palliative therapy and more intense and with greater significance in palliative care; hence, knowing the compromise of quality of life will help professionals in planning interventions with transdisciplinary approach for patients and for their families.