The synthetic gel was prepared by mixing sucrose, silicon and aluminum, and then partially carbonized at 170 ℃ in air (MI) or carbonized at 400 ℃ in oxygen-free environment (MII) to obtain carbon-silicon-aluminum compound.The vapor phase method was adopted to synthesize hierarchical EU-1 zeolite.The research results showed that MI and MII can effectively improve the surface area and the pore volume of mesopores.When the m (sucrose) /m (SiO2) was a fixed value, the mesoporous capacity of MII was better than that of MI.The synthetic samples by MI and MII maintain a consistent rule:with m (sucrose) /m (SiO2) increasing, the crystallinity of the samples decreases gradually;the surface area and pore volume increase little by little;the amount of weak acid and strong acid decreases obviously.The hierarchical EU-1 zeolite is favorable for the diffusion and improved catalytic performance for xylene isomerization, with the catalytic activity increasing from 22.99% to 23.92%, C8 aromatic hydrocarbon selectivity increasing from 89.52% to 91.12%.