”Many people think that pain treatment is only a symptom treatment, which can only improve the symptoms and has little significance; anti-tumor treatment is the “cure”. This view is not scientific. Because cancer pain treatment and tumor treatment are equally important, the earlier the treatment, the better the effect, and it is better to carry out both simultaneously. The purpose of analgesic treatment is to relieve pain. “Effective analgesic treatment can enhance the patient’s body’s ability to resist disease and boost the patient’s confidence to overcome tumor, thus improving the patient’s quality of life, prolonging the survival time and receiving better anti-tumor treatment.” , In fact, the use of analgesics on time is safer and more effective, and requires the lowest strength and dose of analgesics, regardless of whether the pain is onset at the time of administration. On the contrary, cancer pain that is not effectively treated with long-term analgesia is prone to sympathetic nerve dysfunction associated with neuropathic pain due to pain, which manifests as refractory pain such as nociceptive sensitivity and abnormal pain. Some patients and family members mistakenly believe that opioids should only be used when the patient is close to death, and many more are afraid to use opioids because of their “addictive” nature. “Both of these perceptions are wrong.” Misconceptions often lead to clinical non-compliance with medical advice, as evidenced by the use of weak opioids instead of, or at reduced doses and frequencies, so that pain is not effectively controlled. The incidence of opioid addiction is related to the dosage form, route of administration, mode of administration and indication of the drug. Modern medicine has been purifying and improving morphine drugs, which can make morphine drugs released slowly and orderly in human body, without the peak of blood concentration caused by immediate release morphine preparations, which rarely produces euphoria and can overcome psychological addiction. Especially when the drug is administered orally or transdermally, there is little risk of psychological dependence in cancer patients. According to the report, treatment for cancer pain should be carried out in parallel with standard anti-tumor therapy, and generally non-invasive treatment, such as pain medication, physical therapy and psychotherapy, will be used in the first stage; non-destructive invasive treatment, such as nerve block and intrathecal drug infusion, will be used in the second stage. ”Among the various cancer pain therapies, the most effective and core one is minimally invasive interventional therapy. For example, after cancer patients have metastasized, there are lesions in many parts of the body, and the nature and intensity of pain are different, and oral drugs have many side effects, so targeted drug infusion, commonly known as “implantable analgesic pump” technology, can be used at this time. The pain can be effectively controlled by delivering a small amount of morphine directly to the target of the pain. With the same efficacy, the amount of drugs used in this therapy is only 1/300 of the amount of oral drugs, which can greatly reduce the side effects of using morphine and other pain medications. According to foreign experience, cancer patients should be fully evaluated by a pain doctor specialized in cancer pain at the beginning of diagnosis for their pain level, physical function and psychological status, etc., and the need for pain relief treatment should be determined according to the evaluation.