The invention discloses a full-nutrient foliar fertilizer. Every 1000 g of full-nutrient foliar fertilizer comprises 238.06 g of photosynthetic bacteria, 21.98 g of glacial acetic acid, 109.88 g of potassium fulvic acid, 36.63 g of sorbitol, 21.98 g of xylitol, 21.98 g of mannitol, 14.28 g of potassium hydroxide, 11.63 g of sodium hydroxide, 219.75 g of magnesium calcium nitrate, 219.75 g of urea,10.99 g of wood potassium, 10.99 g of sodium glutamate, 18.4 g of boric acid, 3.66 g of ammonium molybdate, 3.2 g of EDTA chelated iron, 3.2 g of EDTA chelated manganese, 3.2 g of EDTA chelated copper, 3.2 g of EDTA chelated zinc, 0.73 g of sodium salicylate, 10.99 g of lysine, 0.15 g of potassium iodide, 10.99 g of tryptophan, 1.46 g of calcium pantothenate, 1.46 g of biotin and 1.46 g of nicotinamide. The fertilizer can promote rooting in the seedling stage, and 2-3 more new roots can grow; when the full-nutrient foliar fertilizer is used, the content of chlorophyll in leaves is increased,the color of the leaves is deep, wax on the surfaces of the leaves is increased, and the disease resistance of plants is improved.