Novel catalyst benzothiazole ionic liquid supported on HZSM-5 ([HBth]HSO4/HZSM-5) was prepared via the excess solvent impregnation where benzothiazole ionic liquid ([HBth]HSO4) was used as the active component and hydrogen HZSM-5 molecular sieved as the carrier. The resulting catalyst was used as catalyst for synthesis of alkyl glycosides. Fourier transform infrared spectroscopy, N2 physical adsorption, field emission electron microscopy and X-ray diffraction results indicated that the benzothiazole ionic liquid was effectively loaded onto the surface and pores of the HZSM-5. When the amount of catalyst was 1.5 wt% of the total material mass, the reaction temperature was 105?C, and the molar ratio of glucose and octanol (n(glucose) : n(octanol)) was 6:1, the yield of octyl glycoside reached up to 148.8% (product mass/glucose mass ? 100%). The substrate expansion and catalyst stability results suggested that [HBth]HSO4/HZSM-5 had a good catalytic effect on alkyl glycosides, and the catalyst could be reused for four times without significant deactivation. After studying the catalytic synthesis mechanism and kinetics of alkyl glycosides, the kinetic equation is determined