Background: Cancer is one of the most critical health problems worldwide today. Studies by different researchers have shown that disease can reduce people's ability to self-care. Therefore, this study was conducted to investigate Self-care needs in patients with cancer.Methods: This study is a conventional, qualitative content. Data saturation achieved after interviewing 13 participants in 15 interviews. With the in-depth semi-structured approach, the participants were asked to narrate their experiences of Self-care needs in the process of disease. The analysis was done according to Graneheim and Lundman's method, the following considered: the unit of analysis, meaning unit, condensation, code, sub-category, category, and main category.Results: Data analysis leads to two main categories of the two main categories of "Deficiency in management of disease". Including three sub-categories: "the need to get rid of annoying physical symptoms"," Need for a caregiver in daily routine," and" Feeling frustrated and giving up treatment". The second main category of "the need for sympathetic and knowledgeable caregivers" with the following five sub-categories: "Need for sympathy and interaction with nurse", "the need to hear the truth about illness", " Need for appropriate therapeutic interaction from physicians", "Inadequate qualification of physicians' secretary about the patient", and" need for a psychologist for psychological adaptation. "Conclusion: The most critical needs are compassionate and informed caregivers. So nursing management and care with kindness, competence, and conscience is the fundamental right of patients with cancer. Identifying the needs and problems of patients can be used as a background for increasing the knowledge and experience of nurses and providing care for patients with cancer.