The liquid -phase alkylation of benzene with 1 -dodecene was carried out over WO₃/ZrO₂ solid super acid catalysts, which was prepared by reaction of zirconium oxyhydroxide with ammoniumme tatung state with wet impregnation method.All the catalysts were characterized.The effects of the calcination temperatures, WO₃ loading , reaction times , the mole ratio of benzene and 1-dodocene , and mass fraction of catalyst as well as the regeneration of catalyst were studied .The results show that solid super acid sites can be formed in the WO₃/ZrO₂ system when calcination temperatures is 750 ～ 850 ℃ and mass fraction of WO₃ is 5% ～ 25%;both Lew is and Bronsted acidic centers appear on their surfaces and can transform with each other .WO₃/ ZrO₂ solid superacid catalyst shows high catalytic activities and good regeneration in the liquid-phase alkylation of benzene with 1-dodecene .The optimum reaction conditions are as follows :reaction time 45 min., calcinations temperature 750 ℃, mass fraction of WO₃ 15%, mole ratio o f benzene and 1 -dodecene 10 , mass fraction of catalyst 4 %.Under these conditions , conversion of 1 -dodecene is 97.3%, selectivity of linear chainalkyl benzene (LAB)is 93.7% and selectivity of 2 -LAB is 71 .4 %.