The invention relates to an agricultural organic fertilizer, comprising the following raw materials: maize straws, cobs, cottonseed hull, bean cakes, a micro element fertilizer, cane chips, EM bacteria and food residues. Plant scraps and food residues are utilized as main raw materials, and the EM bacteria are utilized to ferment, so that the fertility of the fertilizer is improved. The fertilizer contains a lot of strains, the soil also can be improved by flora when nutrients are supplied to plants, the raw materials for fabricating the fertilizer are wide in source, and low in price, plant residues and food residues such as the plant straws and the like can be greatly utilized, pollution caused by direct abandon is reduced, tens of millions of tons of plant residues and food residues can be processed each year, and pollution and waste are greatly reduced.