Disclosed are raw material, functional foods, and herb medicines for preventing and treating metabolic diseases, which comprise a Lysimachiae Foenum-Graeci Herba extract as an effective ingredient. The Lysimachiae Foenum-Graeci Herba extract have an activity of reducing blood glucose levels, triglycerides and cholesterol levels, AST and ALT levels, and fat in the liver, and thus can be effectively used as a hepatic protector and a remedy for preventing and treating various metabolic diseases including diabetes, high blood pressure, fatty liver, cardiovascular diseases, and hyperlipidemia.