Tremella (dry): Tremella can improve the detoxification ability of the liver and protect the liver; Tremella has a certain effect on chronic bronchitis and pulmonary heart disease in the elderly. Tremella is rich in vitamin D, which can prevent the loss of calcium and is very beneficial to growth and development. Because it is rich in trace elements such as selenium, it can enhance the body's anti-tumor immunity; Tremella fuciformis is rich in natural plant gum and has the function of nourishing yin. Long-term use can moisturize the skin and remove chloasma and freckles on the face. Acid polysaccharide, the effective component of tremella fuciformis, can enhance human immunity, mobilize lymphocytes, enhance the phagocytosis of white blood cells and excite the hematopoietic function of bone marrow. Hawthorn: Hawthorn is rich in nutrition, which can prevent and treat cardiovascular diseases and has a cardiotonic effect; Can stimulate appetite and digestion; Has the functions of promoting blood circulation and removing blood stasis. Eating hawthorn products for the elderly can enhance appetite, improve sleep, keep calcium in bones and blood constant, and prevent atherosclerosis. However, hawthorn should not be taken at the same time as ginseng and other tonics, nor should it be eaten too much at one time. People with weak spleen and stomach should eat carefully. Hawthorn has the function of destroying qi. Eating too much will consume gas and affect the health of pregnant women and fetal development. At the same time, hawthorn can also strengthen the contraction of uterus, which can cause premature delivery or abortion. Hawthorn contains a lot of fruit acid, which has astringent and stimulating effects on gastric mucosa. The spleen and stomach function of the elderly is weak, and the development of children's spleen and stomach function is not complete. Eating too much hawthorn will hurt the stomach, reduce digestion and cause indigestion or emaciation. Hawthorn can stimulate gastric acid secretion, make gastric acid increase rapidly, increase its concentration, easily cause nausea and acid vomiting, and even cause peptic ulcer in severe cases. People who are weak after illness need to increase nutrition in order to recover their vitality. Hawthorn not only consumes energy, but also accelerates digestion and excretion, affecting the absorption and utilization of beneficial substances. Crataegus pinnatifida contains not only fruit acid, but also sour sugar, which is a strong corrosive agent and can corrode the enamel of teeth, cause dental caries and aggravate dental diseases.