Any qualified organic fertilizer production must go through composting fermentation process. Composting is a process in which organic matter is continuously degraded and stabilized by microorganisms under certain conditions, and a product suitable for land use is produced.

Compost is an ancient and simple method to treat organic waste and produce fertilizer. With the deepening of research and the improvement of the method, its application has attracted the attention of various countries, because it has a good ecological significance and brings benefits to agricultural production. Soil borne diseases can be inhibited by seed seedbed prepared by composting. And after the high temperature stage of composting process, antagonistic bacteria can make the number of bacteria reach a very high level; in the composting process of organic fertilizer production line, the organic matter is not easy to decompose, stable and easy to be absorbed by crops; at the same time, the role of microorganisms can reduce the toxicity of heavy metals in a certain range.

Therefore, composting is a simple and effective method to produce bio organic fertilizer, which is beneficial to the development of ecological agriculture.