Purpose This study would test if backward walking is an effective exercise program that helps the recovery of the function of children with hemiparesis by combining backward walking with task-oriented gait training Methods This study was conducted from June 6 through July 15, 2022. After asking the child and guardians for consent to research, evaluation and exercise intervention were applied. The same evaluation (GMFM: Gross Motor Function Measure, PBS: Pediatric Balance Scale) was conducted in 4 weeks, 8 weeks, and 12 weeks after the first intervention to finish the research. Result After task-oriented backward walking training, gradual ascending trends could be found in pre-evaluation, evaluation after 4 weeks, evaluation after 8 weeks, and evaluation after 12 weeks of Items GMFM-C, D, E, and Total, and especially, there were more improvements in Items D and E deeply related to walking ability than in Item C. Conclusion To sum up the above results, it is judged that task-oriented backward walking training has positive impacts on the indicators related to the walking ability of the exercise functions of children with hemiparesis. Conclusion After task-oriented backward walking training, gradual ascending trends could be found in pre-evaluation, evaluation after 4 weeks, evaluation after 8 weeks, and evaluation after 12 weeks of Items GMFM-C, D, E, and Total, and especially, there were more improvements in Items D and E deeply related to walking ability than in Item C. The improvement of lower limb function led to that of balance ability, and it was possible to see an improvement in PBS score as well.