Objective: To explore the clinical value of ultrasound-based visualization technology in body fat grafting and to evaluate its effectiveness in improving aesthetic outcomes and surgical safety. Methods: A total of 88 patients who underwent body fat grafting between August 2023 and October 2025 were enrolled and randomly assigned to either the control group or the observation group, with 44 cases in each. The control group underwent conventional fat grafting procedures, while the observation group received grafting under ultrasound visualization guidance. Postoperative aesthetic scores, fat survival rate, incidence of postoperative complications, and patient satisfaction were compared between the two groups. Results: The postoperative aesthetic scores in the observation group were significantly higher than those in the control group (P＜0.05). The fat survival rate in the observation group was also higher than that in the control group (P＜0.05). The incidence of postoperative complications such as fat nodules, contour irregularities, and hematoma was lower in the observation group (P＜0.05). Moreover, overall patient satisfaction in the observation group exceeded that in the control group with statistical significance (P＜0.05). Conclusion: The application of ultrasound-based visualization technology in body fat grafting enhances the precision of the procedure and improves fat survival, significantly optimizes postoperative aesthetic outcomes, reduces complication rates, and demonstrates high safety and clinical applicability.