Abstract: Acidolysis reactions of bis-(cyclopentadienyl)-di-(aryloxy)-titanium were studied. It was proved that acidolysis reactions go step by step. According to the reaction conditions, the second-step acidolysis product, bis-(cyclopentadienyl)-titanium dihalides, and the first-step acidolysis product, bis-(cyclopentadienyl)-(aryloxy)-titanium halides, were obtained. Reaction conditions were discussed.Through above-mentioned reactions, a series of new bis-(cyclopentadi nyl)-(aryloxy)-titanium halides have been synthesized with good yields.Starting from bis-(cyclopentadienyl)-(aryloxy)-titanium halides, a few new derivatives with formulae Cp₂Ti(OAr)Ar and Cp₂Ti(OAr)(OAr') have prepared.