1, food should be coarse and fine, soft, easy to digest and absorb Coarse grains are rich in B vitamins, dietary fiber, potassium, calcium, phytochemicals and so on. The physiological function of the digestive organs of the elderly has declined to varying degrees, chewing function and gastrointestinal peristalsis is weakened, and the secretion of digestive juices is reduced. Therefore, the elderly should choose food with coarse and fine, and the food should be prepared in a way that is soft and easy to digest and absorb. The instructions further explain: (1) what are the benefits of eating coarse food for the elderly, (2) how much coarse food should be eaten by the elderly in a day, (3) how to make the food for the elderly fluffy and easy to digest. 2.Rational dietary arrangements to improve the quality of life Families and society should ensure the quality of their diet, eating environment and eating mood from all aspects, so that they can get rich food and ensure sufficient intake of various nutrients they need to promote the physical and mental health of the elderly, reduce diseases, slow down aging and improve the quality of life. The description section further explains the characteristics of nutritional needs of the elderly. 3. Pay attention to the prevention of malnutrition and anemia The changes in the physiological, psychological and socio-economic conditions of the elderly over 60 years old may lead to malnutrition due to the reduction in the amount of food consumed by the elderly. The prevalence of low body weight and anemia is also much higher in older adults than in the middle-aged population. The description section further explains: (1) the negative effects of underweight on the health of the elderly, (2) how to prevent malnutrition and underweight in the elderly, (3) how anemia affects the health of the elderly, and (4) how to prevent and treat anemia in the elderly. 4. Do more outdoor activities to maintain a healthy body weight The elderly can do more outdoor activities to increase their physical activity and maintain a healthy body weight, and at the same time, they can receive sufficient ultraviolet radiation, which is conducive to the synthesis of vitamin D in the body and prevent or delay the occurrence of osteoporosis. The description section further explains: (1) appropriate outdoor activities for the elderly can delay the decline of body functions, (2) which outdoor activities are suitable for the elderly, (3) four principles of exercise for the elderly, and (4) exercise precautions for the elderly.