A bis(alkoxy-imine-phenoxy) titanium(IV) complex was synthesized and characterized by IR, ¹H NMR, elemental analysis and single crystal X-ray diffraction method. The crystal of titanium(IV) complex belongs to triclinic system with space group, P , a＝14.294(9) ?, b＝16.206(10) ?, c＝18.458(12) ?, V＝3911(4) ?³, D_c＝1.098 g•cm^－3, μ＝0.262 mm^－1, F(000)＝1589, Z＝2, R₁＝0.081, wR₂＝0.240. The ring-opening polymerization (ROP) of D,L-lactide catalyzed by the titanium(IV) complex could take place over 130 ℃ and the maximum number-averaged molecular weight (M_n) of poly(D,L-lactic acid) (PDLLA) was 8.8×10⁴ g/mol. Kinetics experiments indicate that the polymerization shows second-order kinetics in D,L-lactide monomer concentration and first-order kinetics in catalyst concentration. The apparent activation energy (E_a) and frequency factor (A) amount to 76.63 kJ/mol and 2.91×10¹¹, respectively. ¹H NMR spectroscopy of polymer terminated by benzyl group suggests that the polymerization proceeds via a conventional coordination-insertion mechanism and Ti—O active centers initiate the cleavage of acyl-oxygen bond of D,L-lactide monomer.