Dendrobium infusion generally has to be soaked for a long time before the colloidal components inside can be dissolved, so that it is effective. Generally, even if the dendrobium is put into the decoction, it should be decocted first, put the dendrobium into the water after cleaning it, then put hot water on it, try to smother it for a longer time, until the mucus-like colloidal components in the dendrobium dissolve, so that the therapeutic effect comes out. Dendrobium is a medicine to benefit the stomach, nourish yin and clear heat, treating such diseases as dry mouth, deficiency of stomach yin, yin deficiency and fire, bone steam and labor heat, and blurred vision. It is a medicine to nourish yin, and has the effect of clearing heat and brightening eyes.