Objective: To investigate the effect of 1,3-diacylglycerol(DAG) on reducing blood lipid and obesity. Methods: Fifty SD rats were divided into five groups: triacylglycerol (TAG) low-fat diet, TAG high-fat diet, DAG high-dose , medium-dose and low-dose diet. The rats were fed for 6 w, and body weight was recorded every week. At the end of the experiment, the ratio of visceral fat to body weight was calculated, and blood lipid was analyzed. Results: The body weight of rats in TAG high-fat group was significantly higher than that in TAG low-fat group from the 2nd week (P