This research was set out to prove the effect of horticultural therapy on the emotional stability and the depression of military sexual slavery by japan. The two military sexual slavery(A and B) by japan living in Daegu were continuously participated in this horticultural therapy program(HTP). The experiment was conducted 20 times from March to July, 2004. To prove the effect of HTP effect, emotional stability and the depression was diagnosed between pre- and post-program using the BDI(Beck Depression Inventory) and horticultural therapy evaluation table(KHY type). Also after horticultural therapy executing, the observation log was kept down via the horticultural treatment diagnosis table(KHY type). In the result of BDI evaluation, we could notice that the horticultural therapy program improved the emotional stability and depression of A and B subjects. In this study, HTP showed a positive effect in curing mental depression and activities. Therefore, HTP is useful in the rehabilitation of the military sexual slavery by japan.