Large winged beans, native to Central and South America, Australia introduced from Mexico, China introduced test seed from Australia in 1974, now planted in Guangxi, Guangdong, Fujian, Jiangxi and other provinces and regions, performed well. Large winged bean leaves are sparsely green on their leaves, silver-gray fine hairs on the back, and deep purple racemes. It is good legume forage, green feeding or modulation of hay can be, cattle, sheep like to eat, especially the deer eating, seeds for quail, pigeons, turkeys and other birds like to eat. Strong reproducibility, can be cut 2 or 3 times per year, produce fresh grass 45000-60000kg or hay 8250-9000kg per hectare. According to analysis of nutrient contents in stems and leaves of budding lepidoptera in Liangshan State Steppe Station, crude protein 17.70%, crude fat 4.92%, crude fiber 37.28%, nitrogen-free extract 32.30%, crude ash 7.80%, calcium 1.22% , Phosphorus 0.24%; According to the Guangxi Institute of Animal Husbandry, the digestive rates of various nutrients in the stems and leaves of macrofoil bean were 8.0% crude protein, 71.0% crude fiber, 85.6% nitrogen-free extract, and dry stem per kilogram. The total amount of digestible nutrients in the material is 147.5g.