In order to study the effects of Ohwangsahwatang on Hyperchole-sterolemia, experimental study were performed on Hypercholesterolemia Rats induced by 2% cholesterol diet. Also the level of total cholesterol. triglyceride, LDL-cholesterol. HDL-cholesterol, phospholipid, transami-nase(GOT, GPT) were measured. The results were summerized as follows : In the model of Hypercholesterolemia induced by 2% cholesterol diet in rats, Ohwangsahwatang showed decreasing effects on total cholesterol, triglyceride, LDL-cholesterol, phospholipid level, and transaminase (GOT, GPT) activity in serum significantly, depending on the concentration, and showed increasing effects on HDL-cholesterol level in serum significantly depending on the concentration. According to the above results, Ohwangsahwatang showed significant decreasing effects on Hypercholesterolemia, and it is considered that it is appropriate to apply for Hypercholesterolemia.