Abstract: It is very important for development of stock raising to feed cow and sheep using abundant crop straw in China. For overcoming problems existing in straw amination, whole crop straw amination have been studied since 1993. The results showed that this amination technique compared with traditional amination with silo increased straw protein content by 33% to 46%, daily meal for cow and sheep by 15% and digestion rate by 45%. Color, luster and flavor of aminated straw are improved. This technique can save cost of fodder by 500 yun per cow per year and increase profit by 1000 yuan. This technique has been demonstrated in different region in Shanxi province and Hainan province in China. The protein of straw aminated is about 10.5~11.06 g/kg. There is a great potential for this technique to application in large area.