There may be a relationship between a large loss of appetite and not wanting to eat and my angina pectoris. Angina pectoris is a type of disease in which the coronary arteries that nourish the heart muscle become narrowed or occluded, the blood supply to the heart muscle is insufficient, and the heart muscle is deprived of oxygen. The supply of blood and oxygen to the myocardium can be maintained in resting fashion, but when emotional excitement, exertion, satiety, and exposure to cold occur, the heart rate increases, and myocardial oxygen consumption increases with it. In patients with angina pectoris, the coronary blood supply is insufficient to meet myocardial consumption, and symptoms such as chest pain occur. After eating, the distribution of blood throughout the body changes and blood in the gastrointestinal tract increases. Due to the stimulation of food, frequent gastrointestinal peristalsis leads to a faster heart rate, increased myocardial oxygen consumption, and angina pectoris occurs. When patients did not suffer from angina pectoris before, they could eat normal meals, but after suffering from angina pectoris, a full meal will induce angina pectoris, resulting in a large reduction in the amount of meals, and at the same time, because of the lack of myocardial oxygen supply, the patient will have nausea and vomiting and other symptoms of indigestion. It is recommended that angina patients carry nitroglycerin, angina attack can be immediately sublingual. The amount of food is greatly reduced do not want to eat may also be related to other reasons, such as anorexia, gastric cancer, etc., so we need to actively consult the doctor to clarify the cause of the disease for targeted treatment.