The invention relates to applications of N-[5-(1,2,4-triazole-1-yl)thiazole-2-yl]benzamide represented by chemical structural formula I in preparing influenza neuraminidase inhibitors. According to the chemical structural formula I, R is selected from C1-C2 alkyl, and C3-C4 linear or branched alkyl; R1 and R5 are selected from hydrogen, deuterium, methyl, ethyl, hydroxyl, methoxyl, ethyoxyl, fluorine, chlorine, bromine, nitryl, or trifluoromethyl; R2 and R4 are selected from hydrogen, deuterium, methyl, ethyl, hydroxyl, methoxyl, ethyoxyl, fluorine, chlorine, bromine, nitryl, trifluoromethyl, amino, or acetamido; and R3 is selected from hydrogen, deuterium, methyl, ethyl, hydroxyl, methoxyl, ethyoxyl, fluorine, chlorine, bromine, nitryl, trifluoromethyl, cyanogroup, amino, or acetamido.