The purpose of this study was to investigate the effect of aquatic training and detraining on fall-related fitness in the elderly. The study was to examine the effect of detraining(at two and four weeks) on fall-related fitness between aquatic complex detraining group(n=17, 68.18±2.53) and aerobic training group(n=17, 67.78±3.21). For data analysis, mean and standard deviation scores were calculated, and paired t-tests, repeated two-way ANOVA, Tukey post-hoc tests were used. After aquatic training and detraining, the results of the study are as follow: After analyzing the effects of training and detraining(at two and four weeks) on fall-related fitness between aquatic complex detraining group and aerobic training group, the aquatic complex training significantly influenced on muscular strength, muscular endurance, dynamic posture balance, cardiorespiratory, and body mass index, while the aerobic training did not show any effects on fitness factors. In conclusion, aquatic training is more appropriate exercise for the elderly to improve fall-related fitness compared with other exercise. Also it suggests that aquatic training may be more effective than aerobic training to maintain the increased fitness by training or detraining in the elderly.