Organic fertilizer containing nitrogen. The fermentation of caraway bean husk is organic fertilizer. Caraway bean husk is rich in calcium and magnesium, nitrogen, potassium and manganese, caraway bean husk is a kind of natural organic matter, which has a good effect of promoting plant growth. Caraway hulls also contain a certain amount of organic matter; these substances will improve the odor of the soil, protect the soil from attack, reduce weed growth and promote plant root growth.