Painkillers can be taken for cancer pain and need to be prescribed by a doctor according to the condition. Cancer pain is the most common symptom of middle and advanced cancer patients, and the pain is unbearable when it occurs. Oral painkillers are usually needed for symptomatic pain relief. Painkillers for cancer pain are mainly categorized into non-opioids, weak opioids and strong opioids, such as aspirin, codeine phosphate tablets, tramadol hydrochloride extended-release tablets, etc. When taking painkillers for cancer pain, you should take them regularly. Painkillers should be taken at regular intervals and in accordance with the doctor’s instructions, so that the painkillers can give the best results. If, as the disease progresses, the daily dose of painkillers can no longer provide significant pain relief, it is necessary to consult a doctor as soon as possible to adjust the painkiller dosage regimen. If cancer pain occurs, you need to consult a doctor to clarify the condition of the tumor and standardize the treatment under the doctor’s guidance.