Dendrobium candidum is mainly divided into three types: Huoshan Dendrobium, Zhejiang Dendrobium and Yunnan Dendrobium. Dendrobium huoshanense is the best and the effect is very good. But its output is not high and its price is high. The popular models are made in Yunnan and Zhejiang, which is not bad. Its main functions are nourishing yin and promoting fluid production; Enhance physical fitness; Tonifying the spleen and stomach; Protecting liver and gallbladder; Strengthen muscles and reduce blood fat; Lowering blood sugar; Inhibit tumor; Bright eyes; Nourish the skin; Longevity and other effects.