The purpose of researchers related to this research was to evaluate the clinical and radiologic efficacy of functional brace physical therapy (FBPT) for the early treatment of cubitus varus in young infants. In this study, 18 patients with supracondylar fractures and cubitus varus were enrolled consecutively between July 2017 and March 2019. To treat children with early cubitus varus, investigators used the FBPT approach to realign their bones in the varus and sagittal planes. After 3, 6, and 12 months, varus angulation, sagittal plane, and range of motion were measured clinically. The diagnostic imaging and clinical findings were evaluated using the Bellemore criteria. A pre-treatment measurement of the affected side’s humerus-elbow-wrist (HEW) angle showed a range from -38 degrees to -12 degrees (average, -23.2 degrees), while a post-treatment measurement showed a range from -10 degrees to +15 degrees (average, 8.8 degrees). There was no significant change in the affected side after the intervention when compared to the unaffected side (P> 0.05). By the standards of Bellemore, they had a very good outcome in 3 patients (16.7%), a good outcome in 3 patients (77.8%), and a poor outcome in one patient (5.5%). Except for 1 child with lingering various abnormalities, all patients and their parents were pleased with the functional and cosmetic results. Treatment of cubitus varus with the functional bearing pressure technique (FBPT) is successful, especially for younger children within the first 6 months after the injury.