Pain pumps are conveniently fitted for advanced pain in cancer patients. Pain pump, or analgesic pump, is a medical device that provides patients with analgesic drugs at regular intervals, which can be used for analgesic treatment of advanced cancer patients. The drugs in the analgesic pump are mainly analgesic drugs, such as tramadol and morphine, etc. The device can control the input speed of the drugs, and give the appropriate dose of drugs in combination with different degrees of pain. However, the analgesic pump may lead to dizziness, headache, nausea and vomiting and other adverse reactions, it is recommended that the use of the need to communicate with a professional doctor, through the doctor in conjunction with the patient’s condition assessment before use, in order to avoid harm to the organism.