The introduction of Zn can not only adjust the acid properties of β zeolite, but also affect the hydrogenation activity of catalyst. A series of ZnW/β hydrocracking catalysts with different ZnO contents were synthesized by impregnation method, and their physicochemical properties were analyzed in order to study the effect of Zn introduction on the hydrocracking reaction performance. The effect of ZnO content in the ZnW/β catalysts on the catalytic performance of hydrocracking of tetralin to prepare BTX (benzene/toluene/xylene) was investigated. The results show that the highest BTX yield firstly increases (<1%, mass fraction) and then decreases (>1%, mass fraction) with the ZnO content. The yield of BTX increases because the amount of strong acid and total acid of ZnW/β catalyst decreases obviously with the increase of ZnO contents, which inhibits the excessive cracking of tetralin. However, the yield of BTX decreases because the ZnO react with WO3 to form inactive ZnWO4 crystals when the load of ZnO reaches 1%(mass fraction), and the amount of inactive ZnWO4 crystals increase with the increase of ZnO contents, and the ratio of inactive ZnWO4 crystals to WO3 gradually increases, leading to decrease of the number of WO3 hydrogenation active centers. As a result, the hydrogenation center of ZnW/β catalyst does not match well with the acid center. The ZnW/β catalyst with 1% ZnO loadings has the highest BTX yield (41.57%, mass fraction) when the reaction space time is 0.36 h, which indicates that the acid amount of the catalyst is moderate and the matching between the hydrogenation center and the acid center is the best. Therefore, suitable matching of catalyst metal center and acid center and moderate acid strength are the key to improve the yield of BTX.