Lotus root , also known as lotus root , belongs to the Nymphaeaceae plant, the rhizome of lotus. It is large and knotted, with some small tubular holes in the middle, which are connected by silk after breaking. The lotus root is slightly sweet and crisp, can be eaten raw or cooked, and has a high medicinal value. Its roots, leaves, leaves, flowers and fruits are all treasures and can be used as nourishing medicine. With a lotus made of flour, to digestion and diarrhea, appetizers heat, tonic-cultivation, the internal prevention of blood , women and children child woman, the infirm good liquid food and nourishing Jia Zhen, in the Qing Xianfeng years, he was handpicked as the imperial tribute Up. The lotus root is native to India and later introduced to China.