목적: Patients with unilateral hearing loss (UHL) have difficulty locating sounds due to a lack of binaural input, and the need for intervention is emerging. The purpose of this study was to evaluate the possibility of an intervention paradigm for training sound localization ability through virtual reality (VR). 방법:A total of 10 patients with UHL (UHL group) and 20 normal-hearing controls (NC group) participated in the study. Auditory stimuli were acquired through individualized binaural recording methods in the UHL group and non-individualized binaural recording in the NC group using KEMAR head model in the NC group. Auditory stimuli were recorded at each of the nine angles in the azimuth. In a virtual environment, each stimulus was emitted from the virtual sound source at the recorded azimuth. The subjects were instructed to find the location by moving head and pressing the controller button, with which visual feedback was provided. A 45-minute training session using VR was performed three times a week. The difficulty of training escalated from 3(level 1) to 9 directions(level 4). The training effect was evaluated in a VR environment and sound field four times, including before, during, after, and three weeks after training. 결과:Both groups showed improvement in sound localization performance but in different difficulty levels. While the UHL group improved significantly in level 1, the NC group showed significant improvement in more difficult levels of 3 and 4. The training effect was retained three weeks after training. In the auditory localization test in the sound field, the UHL group showed better right-left discrimination in the impaired ear side after training. 결론:After training in VR, both NC and UHL groups showed improved sound localization ability. In particular, the UHL group presented improvement in the impaired ear side in both sound field and VR environments. These findings indicate that VR systems can be used as auditory training to improve sound localization ability.