Prolonging life span lead to lose the ability of the cells's regeneration and the development of cancer cells. Cancer patients may suffer from pain related tumor invasion or compression of pain-sensitive structures, diagnosis and treatment of cancer or non-cancer reasons. Pain adversely affect activities of daily life and leads to decrease their quality of life. Therefore, evalution of pain in elderly patients plays an important role in the treatment process and quality of life. This requires a multi-dimensional approach, such as physical, emotional, and psychosocial. Nurses should identify and evaluate subjective symptom of pain, choose the appropriate methods of relieving pain.