There is no fixed value for the survival time after the appearance of cancer pain, and the exact time that can be survived needs to be further judged according to the patient’s condition and the treatment method adopted. Cancer pain may be caused by tumor infiltration, which induces the production of large amounts of prostaglandins, or it may be neuropathic pain due to tumor growth and nerve compression. Generally speaking, the presence of cancer pain will add to the patient’s suffering and imply an aggravation of the disease, and does not directly mean that death is imminent. Most cancer patients may experience severe pain at the site of malignant tumor, and treatment through scientific means can control the disease development as effectively as possible and prolong the effective survival period. When cancer pain occurs, there should also be a good attitude and active treatment, which can play a very good role in relieving pain and prolonging survival. Usually, there should also be effective regulation in diet, and more protein-rich food and clear vegetables and fruits should be consumed.