There is no inevitable link between a larger meal size and a longer life expectancy for the elderly. Elderly people’s meal size can only show that the elderly appetite, digestive system function is stronger, the body’s metabolism is also better, can show that the elderly body’s general condition is better, but it does not mean that the larger the meal size the longer the life expectancy. Elderly people should ensure that the amount of food for the normal amount of food, each meal to eat seven or eight minutes full can, do not overeat or eat too much to cause gastric distension or indigestion. As the elderly age, the metabolism is slowly declining, eat more soft and easy to digest food, while eating more vegetables and fruits with high dietary fiber, to be nutritionally balanced. Elderly meal size and life expectancy is not necessarily linked, it is recommended that the elderly to eat a healthy diet, balanced nutrition, do not overeat, so as not to cause indigestion affects health.