Opioid pain medications include weak opioids and strong opioids. Weak opioids include tramadol, tramadol extended-release tablets, codeine, etc. Strong opioid pain medications include morphine, oxycodone hydrochloride, fentanyl, etc. For moderate to severe pain, strong opioid pain medications such as morphine hydrochloride tablets, oxycodone hydrochloride extended-release tablets and morphine sulfate extended-release tablets are usually chosen. The medication needs to be administered on time to maintain a stable blood level and continuous pain relief. The medication should also be administered as needed. If the patient experiences an outbreak of pain, morphine tablets, morphine hydrochloride tablets, and morphine injection can be used. In addition, it is necessary to closely observe whether adverse reactions, such as gastrointestinal reactions, respiratory depression, changes in the central nervous system, etc., occur during the administration of the drug.