In China, the drug treatment of many cancer pain patients is obviously affected by people's lack of knowledge and confidence, and cancer pain symptoms fail to be effectively controlled. This retrospective case-control study explored the effect of application of structured education management in standardized treatment of cancer pain. Eligible cancer pain patients from June 2022 to April 2023 were selected as the control group. The intervention group was selected from May 2023 to December 2023. Control group received analgesic treatment according to three-step analgesia method, the intervention group received structured cancer pain education intervention on the basis of the treatment for control group. The level of pain control disorders, total effective rate of pain relief and the frequency of pain outbreak, equivalent morphine consumption, and incidence of adverse events were compared between the two groups at enrollment and 2 weeks after. After treatment, the pain control disorder scores and NRS scores in the two groups were lower than that before treatment, and intervention group were lower than that in control group. The total effective rate of pain relief in intervention group was higher than that in control group. The total equivalent morphine dosage in the intervention group was lower than that in the control group. The incidence of constipation, nausea, vomiting, and fatigue in the intervention group was significantly lower than that in the control group, but there was no significant difference in the incidence of rash. Clinical pharmacist-led structured education can significantly improve therapeutic effect on cancer pain and reduce the adverse reactions.