In order to study effects of ${ulcorner}Persicae;Semen{lrcorner}$ on the hyperlipidemia rats induced by Triton WR, we have made hyperlipidemia rats by administering Triton WR-1339 for 3 days, then have administered. The results were summerized as follows: 1. The total cholesterol, triglyceride and phospholipid by hypercholesteremic rats injected by Triton WR-1339 of the sample group were decreased as compared with those of the control group, 2. The HDL-cholesterol by hypercholesteremic rats injected by Trion WR -1339 were increased as compeared those of control group. According to the above results, Persicae Semen showed inhibition on increase of serum total cholesterol, triglyceride and phosholipid contents as well as inhibition on decrease of HDL-cholesterol contents in hyperlipidemia.