NOVELTY - An organic fertilizer additive comprises following raw material components: 2 wt.% radix Glycyrrhiza, 2 wt.% radix Pueraria, 2 wt.% of branches and leaves of Chrysanthemum, 1 wt.% of chitosan oligosaccharide, 1.5 wt.% of dry yeast, and 91.5 wt.% of water.    USE - As organic fertilizer additive (claimed) used in fertilizers such as nitrogenous fertilizer, and phosphate fertilizer.    ADVANTAGE - The organic fertilizer additive provides comprehensive nutrition supply to crops, exhibits long term fertilizer efficiency, increases soil organic matter content and promotes microbial growth, improves physical and chemical properties and biological activity of soil, and is the main nutrient of green food production. The additive improves fertilizer application rate, improves efficacy of fertilizer, avoids soil contamination caused by inorganic contaminants such as lead, chromium, mercury, cadmium, arsenic and heavy metals, avoids heavy metal pollution, is non toxic, does not cause harm to human health, causes zero pollution to the environment, and uses naturally available raw materials. The additive reduces wastage of fertilizer nutrients, promotes development of plant, improves crop yields, and provides ecological and environmental benefits. The additive uses easily available raw materials and can be prepared by a pollution-free process that is good for industrial production. The method of production is simple and low cost.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the organic fertilizer additive comprising following raw materials: 2 wt.% radix Glycyrrhiza, 2 wt.% radix Pueraria, 2 wt.% of branches and leaves of Chrysanthemum, 1 wt.% of chitosan oligosaccharide, 1.5 wt.% of dry yeast and 91.5 wt.% of water, involving: cleaning radix Glycyrrhiza, radix Pueraria, and branches and leaves of Chrysanthemum, and soaking in 100 degrees C temperature water bath for 4 hours, after completing soaking, filtering the soaking solution of radix Glycyrrhiza, radix Pueraria and branches and leaves of Chrysanthemum residue and impurity; taking the filter liquid, storing and standing for 20-30 minutes in shady place, adding dry yeast and chitosan oligosaccharide, fermenting, where fermenting time is 30 days and forming the product.