This sudy aimed to evaluate the effect of Punsimgieum-gamibang(分心氣飮加味方) on emotionality and sleep disorder. Punsimgieum(分心氣飮) has been used for insomnia, trembling, emotionality caused by strong mental stimulation and continuous stress in Oriental Medicine. And it was reported that Punsimgieum had anti-stress and anti-depression effect. Animals were devided into two groups : control group and Punsimgieum-gamibang group.Emotionality was tested in open-field with five indexes : walking, rearing, grooming, excretion and start latency. For the study of sleep disorder, after two groups had been given caffeine into abdomen, activity amount in animals was assessed for daytime and then the average percentage of sleep in two groups was calculated.The following results were observed.1. In peripheral and central partition, meditaion group walked more than control group. The difference between two groups was statistically significant.2. In rearing and grooming frequency, there was difference between two groups, but it was not statistically significant. 3. In grooming. excretion and start latency. there was no difference between two groups.4. There was no difference in the average percentage of sleep between two groups.