Analgesic drugs for cancer include the following: 1. weaker analgesics, such as ibuprofen, fenbid, acetaminophen, tylenol, etc. 2. analgesics containing narcotic ingredients, such as morphine or morphine hydrochloride extended-release tablets, morphine controlled-release tablets and codeine, etc. 3. analgesic drugs such as fentanyl and dulcolax. The above analgesic drugs should be used according to certain principles. Regarding the analgesic drugs for cancer, it is emphasized that they are supplied according to the need, and patients need to be given strong analgesic drugs when they feel pain to ensure that they are pain-free and improve the quality of life, so special attention is paid to the titration therapy of morphine to reduce pain.