Objective : Recently there are a lot of attempts to treat obesity through energy expenditure. Especially UCP-1 and PPAR-${delta}$ is known to play a key role for energy dissipation through the increasing thermogenesis. Gambi-hwan extract is a traditional medicine made of herbs containing the polyunsaturate fatty acids related to the energy expenditure. It is expected to reduce the weight by means of the expression of UCP-1 and PPAR-${delta}$. Meterial and Method : We divided 21 rats into 3 groups and assigned 8 rats respectively. The normal group was administered normal diet, the control group was administered high-fat diet, and the G50 group was administered high-fat diet with Gambi-hwan extracts50 mg/kg. And then the weights of body, food intake, the changes of lipids in blood stream, and the expressions of UCP-1 and PPAR-${delta}$ on adipose tissues were measured respectively. Result : The reduction of body weight and the increasing tendency of expression of UCP-1 and PPAR-${delta}$ mRNA were shown in G50 group. In the G50 group the Triglyceride level is decreased and the HDL-cholesterol level and the expression of PPAR-${delta}$ and UCP-1 protein on Visceral adipose tissue were significantly increased. Conclusion : This result indicates that Gambi-hwan Extract upregulate the expression of UCP-1 and PPAR-${delta}$ in adipose tissue, which may contribute to reducing the weight of adipose tissue.