An orange reactive dye compound, and a preparation method and an application of same. The dye compound is represented as the formula (I), wherein D1 and D2 are independently groups represented as the formulas (a), (b) or (c), and the D1 and the D2 are not (a) at the same time; R1, R2, R4, R5, R7 and R8 are independently hydrogen, C1-C4 alkyl groups, C1-C4 alkoxy groups or sulfonic groups; m and n are from 0 to 3; each R3 is independently an amino group, a sulfonic group, a ureido group, a C1-C4 alkylacylamino group or a C1-C4 alkoxyl group; each R6 is independently a hydroxyl group, an amino group or a sulfonic group; X1, X2 and X3 are independently hydrogen, C1-C4 alkyl groups, C1-C4 alkoxy groups, -SO2Y1, -NHCO(CH2)pSO2Y2 or -CONH(CH2)qSO2Y3; at least one of the D1 and D2 contains a fiber active group; Y1, Y2 and Y3 are independently -CH=CH2, -C2H4OSO3H or - CH2CH2Cl; p and q are from 1 to 3. The invention also provides an application of the dye compound in cellulose fibers and polyamide fibers and textile printing therefor. The dye compound has high color fixation rate, good washing fastness, excellent build-up capability, and good stability of combination with fibers.