Ophiopogon japonicus is the root of the Liliaceae plant, Ophiopogon japonicus. The roots are spindle-shaped, with large particles, slightly pointed ends and small center pillars. The surface is yellowish white, shiny, and fine vertical stripes. The section is milky white, translucent and flexible. Scent, chewy, sticky, sweet, slightly bitter, slightly cold. Chuan Maidong is a traditional Chinese medicine and food medicinal material. It has the effect of nourishing yin and spleen, moistening the lungs and eliminating fire. It is an essential medicine for nourishing yin and sputum in Chinese medicinal materials. There are “Yucheng Maidong Qianjinbao, the original animal of the herb Wan Guozhen” Said.