Purpose The purpose of this study was to investigate the effect of contact hand-orientating response (CHOR) training on balance and activities of daily living in patients with cerebellar ataxia in a single case study. CHOR is the ability to provide stability with only a light touch of the hand to the ground or supporting surface. Methods This study was conducted using the ABA design for a total of 10 weeks from June to July 2022 with one male and one female diagnosed with cerebellar ataxia. During the study period, a total of 18 sessions were applied to the subjects: 3 sessions of baseline A, 12 sessions of intervention period B, and 3 sessions of baseline A'. During the baseline period, BIORescue and functional reach test (FRT) were measured by dynamic balance evaluation without somatosensory training, and during the intervention period, the same evaluation was performed after applying CHOR training for 30 minutes each session 3 times a week. Berg balance scale (BBS) and Assessment of motor and process skills (AMPS) were conducted as pre- and post-assessments. Results As a result, BIORescue, FRT, BBS, and AMPS were all improved compared to before applying somatosensory training, and it was confirmed that they were maintained even after the intervention was completed. Conclusion This study demonstrated that CHOR training showed significant improvements in balance and activities of daily living in patients with cerebellar ataxia.