As we age, various functions of the elderly diminish, and there may be a variety of diseases co-exist. Therefore, to prevent old age diseases, first of all, we should change our lifestyle, first of all, we should stop smoking and limit alcohol, in the diet we should have less sugar, less salt, low fat, and meat, eggs, milk can be eaten in moderation, vegetables, fruits can be eaten, and the mood must be good. And also after the doctor’s assessment, if some of our body disease is still relatively light, can be improved through diet, exercise, mood relaxation, but also after the doctor’s assessment, the appropriate addition of a little bit of medicine, you can prevent the disease of old age.