In daily life, when encountering various kinds of pain, they often take painkillers on their own without guidance. The reasonable use of painkillers can play a role in reducing pain, but if used for a long time, especially if abused, it can cause serious damage to human health. There are many kinds of painkillers, mainly the following categories: the first category is non-steroidal anti-inflammatory painkillers. Commonly used are aspirin, ibuprofen, anti-inflammatory pain, paracetamol, pautazone, rofecoxib, celecoxib and so on. The pain relieving effect is relatively weak, no addictive, widely used, efficacious and used for general common pain, but if used improperly, it can also cause damage to human health. The second category is central painkillers. Represented by tramadol, it is a synthetic central painkiller, belongs to the second category of psychotropic drugs, and is a non-narcotic painkiller. The pain relief effect of tramadol is stronger than that of general antipyretic painkillers, but not as strong as that of narcotic painkillers, and its pain relief effect is 1/10 of that of morphine, which is mainly used for moderate acute pain and post-surgical pain, etc. The third category is narcotic analgesics. Morphine, dulcolax and other opioids as representatives. This type of drug pain relief is very strong, but long-term use can become addictive. These drugs have a strict management system and cannot be used casually, mainly for advanced cancer patients. ”Treating the headache and treating the foot” is an extremely wrong approach. Therefore, the correct treatment for chronic pain is to remove the inflammatory metabolites and effectively improve the local blood circulation disorder through the treatment of the cause of the disease, so as to interrupt the vicious cycle of pain and achieve the purpose of long-term perfect analgesia. If dulcolax is injected indiscriminately for pain, the condition will be delayed because the pain is temporarily concealed, which will surely cause serious medical accidents, so the correct method of analgesia must be adopted.