At present, it is found that the active ingredients of Dendrobium include: 1. Dendrobium active polysaccharide: Many plants contain polysaccharide, but those containing active polysaccharide are extremely rare. As determined by modern science and technology, dendrobium contains rich dendrobium active polysaccharide, and its content is 25% and above. Dendrobium active polysaccharide has the efficacy of anti-tumor, anti-inflammation, lowering blood pressure, lowering blood sugar, inhibiting lipid peroxidation, anti-aging, speeding up body recovery, increasing the number of human white blood cells, cancer adjuvant therapy, improving human immunity and so on. When people eat Dendrobium directly or Dendrobium, why does it taste sticky and smooth and sticky after chewing? It is because the dendrobium contains rich dendrobium active polysaccharide. 2, dendrobium alkali: Dendrobium also contains dendrobium alkali. According to modern pharmacological experiments, dendrobium alkali has a certain inhibitory growth and killing effect on tumor cells, with obvious anti-tumor activity, by improving human immunity to reduce the toxic side effects of radiotherapy on the human body, but also to reduce blood sugar, anti-aging. 3.Phenanthrene compounds: The two phenanthrene compounds contained in Dendrobium ironbark have the effect of resisting human lung cancer cells and ovarian cancer cells, and the effect of resisting promyelocytic leukemia. 4, amino acids: According to modern medical experiments, Dendrobium contains 18 kinds of amino acids, which can meet the human body’s demand for amino acids and have health effects such as antioxidant, anti-aging, hypoglycemia, liver and lung, softening blood vessels, stomach and stomach care. 5, trace elements: Dendrobium contains a variety of trace elements, including calcium, iron, zinc, selenium, magnesium, manganese, copper, chromium, nickel, etc., which can meet the human body’s needs, regulate human metabolism, fully nourish, and contribute to a long and healthy life. In addition, Dendrobium has the effects of nourishing Yin and moistening dryness, nourishing liver and brightening eyes, anti-radiation, strengthening spleen and appetite, moisturizing skin and nourishing face. In modern clinical medicine, Dendrobium is mainly used in chronic pharyngitis, digestive system diseases, ophthalmic diseases, thrombotic diseases, arthritis, cancer treatment and cancer adjuvant therapy, etc. The effect is very significant. Used externally, Dendrobium ironbark also has obvious effects of anti-inflammation and pain relief, blood circulation and elimination of scars. Dendrobium active polysaccharide is the main component of Dendrobium, and it can be said that which Dendrobium contains high active polysaccharide component, which is the high quality Dendrobium. In the process of growing Dendrobium, the growth environment is the key factor to determine the quality of Dendrobium, and from the growth cycle, the Dendrobium that grows for 3-5 years has the highest content of active polysaccharide in its body.