The difference between unsaturated fats and saturated fats lies in several aspects, such as composition structure, source, form, and effects on the human body. The fat content of food is more complex, divided into unsaturated and saturated fats, in order to ensure health, as well as reasonable choice of food, it is necessary to understand the difference between fats. First, the composition of the structure: 1, unsaturated fat: is the composition of the fat containing double bonds, containing a single double bond is called monounsaturated fat, containing multiple double bonds is called polyunsaturated fat; 2, saturated fat: does not contain double bond components. Second, the source: 1, unsaturated fat: mostly from vegetables, such as onions, leeks, and fruits such as pomegranates, apples, and fish, such as turtle; 2, saturated fat: mostly from meat fat, butter, cream, etc., a few plants such as coconut, palm, also contains saturated fat. Third, the form: 1, unsaturated fats: mostly liquid when stored at room temperature, such as sunflower oil, peanut oil, olive oil, etc.; 2, saturated fats: because the molecular structure is more regular than unsaturated fats, so it is easy to be solid in normal room temperature. Whether it is animal oil or vegetable oil, as long as it is solid at room temperature, it usually suggests that it contains more saturated fat. Fourth, the impact on the human body: 1, unsaturated fats: monounsaturated fats contain mainly oleic acid, moderate consumption can be beneficial to control blood lipids, anti-thrombotic. Polyunsaturated fats contain linoleic acid and other substances, but also help control blood lipids and prevent atherosclerosis, but they can not synthesize themselves, need to be obtained in soybean oil, sunflower oil and other foods; 2, saturated fat: which has a high cholesterol content, too much consumption may cause cardiovascular damage, so in daily life, you can try to choose foods containing unsaturated fat intake.