The invention provides coated slow-released fertilizer. The coated slow-released fertilizer is prepared from fertilizer raw materials and 10-20 parts of a coating material coating the fertilizer raw materials, wherein the fertilizer raw materials comprise 1-2 parts of aspartate, 1-2 parts of organic acid, 1-3 parts of wood flour, 5-10 parts of yellow phosphorus slag and 40-50 parts of compound fertilizer. The utilization rate of the coated slow-released fertilizer can be powerfully increased, the coated slow-released fertilizer can meet demands of crops for various nutrients during growth through one-time application and does not pollute the environment and more diversified slow-release fertilizer is provided to meet growth demands of crops.