According to 7 years tests of biological-organic fertilizers the results showed that employing biological-organic fertilizers could keep on crops thriving and accelerate dry matter. Content of soil organic matter, soil total nitrogen and alkaline nitrogen were advanced markedly and soil fertility was improved through long-term employing biological-organic fertilizers. The treatment of using biological-organic fertilizers 15000kg/hm~2 soil organic matter content raising was fastest in all treatments. Crops yields could be increased steadily and persistently for employing biological-organic fertilizers. The treatment of using biological-organic fertilizers 15000 kg/hm~2 winter wheat average annual yields increased 1808 kg/hm~2 than traditional fertilizers and 3652 kg/hm~2 than control; in this condition summer maize average annual yields increased 2668kg/hm~2 than traditional fertilizers and 5062kg/hm~2than control.