BACKGROUND: Improved results and increased mobilization following abdominal surgery are achieved by pain management and early mobilization strategies. OBJECTIVE: The study aimed to assess the effectiveness of supportive educational intervention on the level of pain and physical function of patients who had undergone abdominal surgery in both the experimental and control groups. METHODOLOGY: A randomized control experiment was conducted in sixty post-operative patients. Thirty patients each were assigned to an experimental group and a control group. The experimental group received supportive educational intervention, whereas the control group received routine care. The Barthel index for daily living activities and the numerical pain rating scale were evaluated following the nursing intervention in each group. RESULTS: Following the intervention, in the experimental group, 70% of patients had mild pain and 90% had independent physical function, whereas in the control group, 40% had mild pain and 46% had independent physical function. Comparing the experimental group of patients to the control group, there was a significant increase in physical function and a significant reduction in pain (p < 0.001). CONCLUSIONS: The results of the study demonstrated that to reduce postoperative patients' pain and enhance their physical performance, nurses working in a clinical setting should implement a supportive educational intervention as a follow-up treatment. More research in randomized controlled trials with a larger sample size is required to validate these findings.

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