The invention relates to a sugarcane foliar fertilizer formula: the following raw materials are added into a blender according to weight percentage of 10 percent of imidacloprid of concentration of 95 percent, 75 percent of monosultap of concentration of 95 percent and 15 percent of cartap hydrochloride of concentration of 98 percent, the materials are fully blended and added with the same amount of kaolin as filling agent and humectant, the amount of which equals to 2 percent of the raw materials, and the obtained material is ground and evenly stirred; zinc sulfate, borax, manganous sulfate and ammonium molybdate are ground respectively, and are added with, according to the weight percentage, 40 percent of zinc sulfate, 20 percent of manganous sulfate, 36 percent of borax, 3.5 percent of ammonium molybdate and 0.5 percent of gibberellin as growth regulator, then all the materials are evenly blended; the blended pesticide and the blended micronutrient fertilizer are mixed by ratio of 1 to 2, thus forming the fertilizer. The fertilizer is diluted by water by 200 times and sprayed on the plant leaves of the sugarcane. One day after the fertilizer is sprayed, control efficiency of woolly aphids is over 96 percent, and three days later, the control efficiency of woolly aphid reaches 100 percent; meanwhile, the fertilizer is efficient for egg of snout moth's larva and larvae of the sugarcane to some extent, and can reduce dead hearts in fields; after the fertilizer is absorbed by the leaves, the leaves turn green, with yield improved by 15 percent and brix improved by 0.2 percent in the fields.