The invention discloses a modified-Chinese-chestnut-protein-coated amino acid slow-release fertilizer. The fertilizer is made from the following raw materials, by weight part, 32-35 of sawdust, 6-7 of potassium monohydrogen phosphate, 2-3 of calcium acetate, 10-12 of beer's grains, 2-3 of xanthan gum, 3-4 of glutamate, 2.5-2.8 of aspartate, 1.8-2.2 of glycinate, 75-78 of fresh Chinese chestnuts, 18-22 of fruits of ficus pumila, 0.6-0.8 of a glutamine transaminase preparation and a proper amount of water. The fertilizer is made through addition of multiple amino acid salt and can prompt crops to absorb the amino acid salt through technology such as fermentation and chelation. The fertilizer can fully supplement medium trace elements, improve activity of roots of the crops, and improve the absorption effectiveness of the roots. The use ratio of nitrogen and phosphor in the fertilizer is increased, the volatilization loss of ammonia is reduced, and the yield of crops is greatly increased.