Fengdu Dendrobium belongs to the processed products of Dendrobium, which is taken from the stem of Dendrobium, processed and concocted, and twisted into a spiral or spring shape called Fengdu while baking. The effect is mainly to nourish the yin meridian. Generally it can nourish the qi and fluid of the lungs and stomach, and the kidney water is self-generated. According to Chinese medicine, the material basis of life activity is mainly yin fluid, which needs Dendrobium Officinale for nourishment, and it can also strengthen the body. Because Maple Pipe Dendrobium has the effect of nourishing yin and nourishing blood, it can nourish the kidney, accumulate essence, nourish stomach yin, and benefit qi. Dendrobium is rich in polysaccharides, which can enhance immune function and can nourish the spleen and stomach. Spleen and stomach have the important role of digesting food and drink, taking in water and grain essence and nutrition, and nourishing the whole body. Therefore, the influence affects the adequacy or not mainly depends on the function of spleen and stomach. Therefore, Dendrobium has a better tonic effect on the spleen and stomach.