Organic fertilizer contains rich organic matters and various nutrient elements. The decomposed organic fertilizer provides energy and nutriment for microorganism, promoting their activity and expediting organic decomposition. Organic fertilizer can improve the structure of soil. It can strengthen the ability of water retention and fertilizer retention. The investment of organic fertilizer is much too lower than chemical compound fertilizer. now there are many kinds of organic waste like animal manure, city waste,restaraunt waste,food waste, they are all very good organic matters, we can recyle them in efficient to turn them into organic fertilizers.