Older people with coronary heart disease should take their medication on time, avoid overexertion, rest in bed immediately if they have a sudden attack at home, and then get up and move around after the symptoms are relieved, gradually increase the amount of activity, and move around without chest tightness or chest pain, and take this as the maximum activity indicator if the above symptoms occur. In terms of diet, we should have a low-salt, low-fat diet, avoid eating too fast and too full, reasonably adjust the diet structure, eat more vegetables and fruits, avoid eating stimulating foods such as chili, strong tea, coffee, etc., and quit smoking and alcohol. You should pay attention to the change of climate, prevent from catching cold and flu, strengthen physical exercise, enhance body resistance. You should learn to measure your pulse and heart rate, and if your heart rate suddenly becomes faster or slower, you should measure the change in heart rate by yourself, and you should have some first-aid drugs at home or on you, such as quick-acting heart pills, nitroglycerin or compound salvia drops.