Cardamine violifolia, also known as “wild rape”, is a cruciferous herbaceous plant with the unique abilities of selenium enrichment and high organic selenium conversion. Rich in all kinds of nutrients, it is a kind of wild mountain vegetables that are eaten for a long time in the high mountain area of Enshi, and it is also a new resource food approved by the National Health Commission. In 1981, it was first discovered in Yutangba, Shuanghe Town, Xintang Township, Enshi City(the location of the world’s only selenium deposit),and the selenium content of wild Cardamine leaf collected by scientific researchers from the local can reach more than 9000mg/kg, which is the largest selenium accumulation plant found in the world.