This study examined the effects of original insoles to improve the toe grip function, involving 50 healthy adult females (20.1±1.1), with the aim of introducing them. Fluctuations in the center of gravity were measured under 3 conditions to compare the total trace length and outer peripheral area: barefoot, using general insoles (general), and using those to improve the toe grip function (study). In multiple comparisons, the total trace length was significantly shorter under the general and study compared with barefoot condition (p<0.01). The outer peripheral area was markedly smaller under the study compared with barefoot condition (p<0.01). It was demonstrated that the insoles to improve the toe grip function positively influence the standing balance. The significance of conducting studies based on intervention or involving the elderly was also indicated.