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A series of Ni-Mo/zeolite-A12O3 catalysts was prepared byincipient wetness impregnation andtheir catalytic experiments were carried out using an automated microflow apparatus. It is concluded that theNi-Mo catalyst loaded on the HUSY has larger BET surface areas and possesses more acid sites than thatloaded on the HY zeolite, and simultaneously the Ni-Mo/HUSY-A12O3 catalyst reveals higher catalytic activ-ity characterized by feedstock conversion and isomer yield which is about two or three times higher than thatof the Ni-Mo/HY-A12O3 catalyst.