What is Ye Shi Tian's theory of benefit? For people who are weak or suffering from senile diseases, Ye Shi Tian thinks it is most appropriate to use medicated diet, because "the old man is exhausted and has no way to attack the disease, to the effect that he belongs to flesh and blood, just to cultivate his anger." The spleen and stomach of the elderly are weak, nourishing and greasy hinder the spleen, and just dryness hurts the stomach. In drug treatment, it is especially necessary to pay attention to "emphasizing the spleen and stomach, avoiding dryness and greasy, protecting healthy qi and observing physique". He warned the elderly that "the most important thing in old age is loyalty", and the climate should also be taken into account when prescribing drugs, and irritating drugs should be used with caution. Therefore, unless absolutely necessary, diet therapy and medicated diet should be adopted first, and the medicine should be used later. Ye Gaochao's academic opinions are of great significance for the elderly to maintain health, prevent old age and provide for the elderly. He believes that if the elderly want to learn to keep in good health, they must start from the following aspects. Ye was a famous physician in Qing Dynasty, with profound medical attainments, and was good at treating exogenous heat syndrome. He is the founder of febrile diseases in traditional Chinese medicine. /kloc-study medicine at the age of 0/4, and learn from others with an open mind. Finally, he became an outstanding medical celebrity and a great gerontologist.