It is best for patients with coronary heart disease to eat vegetable oil, which is an oily substance extracted from plant fruits, such as peanuts, sesame seeds, sunflower seeds, corn and so on. It contains high unsaturated fatty acids, which are very favorable to the prevention of atherosclerosis. Coronary heart disease is coronary atherosclerotic heart disease, dyslipidemia will lead to coronary artery intima-media lipid deposition to form plaques, which can cause incomplete or complete obstruction of blood vessels, which can lead to obstruction of blood vessels distal blood flow is reduced or interrupted, thus causing ischemia or necrosis of cardiomyocytes, which can be manifested as angina pectoris or myocardial infarction. Animal oil contains high saturated fatty acids, easy to deposit in the intima of blood vessels, can aggravate the occurrence and development of atherosclerosis, is not conducive to the recovery of patients with coronary heart disease, in daily life or try to eat less animal oil.