By use of field trials data from 2013 to 2014,the paper analyzed the use efficiency of water and fertilizer,growth indicators,factor of yield structure,yield of goods and final yield of three main typical crops( maize,potatoes,and soybeans) in Inner Mo water and fertilizer integration ngolia under the condition of traditional planting and water and fertilizer integration. It discussed the mechanism of action of water and fertilizer integration such as taking fertilizer to diverse water and water to fertiliz...