Since the land reform, the application of chemical fertilizer in China has increased by 4.5 times, reaching 6000 in 2016 alone × 104 t。 The corresponding grain output has increased by only 83% over the past 30 years, and the growth rate of chemical fertilizer consumption has far exceeded the growth of grain output. This reflects a problem from the side. After the amount of chemical fertilizer reaches a certain level, its contribution to grain growth is not large, but the damage to cultivated land fertility increases year by year.

How to dispose manure by organic fertilizer equipment and protect the environment has become one of the important issues that restrict the steady and healthy development of the association. If feces are not treated centrally, it will seriously pollute the air and water quality, and cause a very serious impact on people's production and life. Therefore, feces are treated in breeding to achieve clean breeding and turn waste into treasure. The treated feces are high-quality fertilizers for the production of pollution-free vegetables and green food. At the same time, it can significantly improve the quality of crops and reduce the content of harmful substances and heavy metals in crops, which is conducive to human health.

At present, the production output of livestock manure organic fertilizer is still low, the labor cost and transportation cost of production and application are relatively high, the technology development is not mature, and the price of real high-quality organic fertilizer is also high, which leads to many farmers' unwillingness to use. Therefore, the processing technology and equipment of livestock manure organic fertilizer need to be further developed.