Bi4Ti3O12 powder was prepared by a co-precipitation method and characterized with DTA, XRD, IR, BET and TEM. The results indicated that the as-prepared precursor consisted of well-dispersed particles of about 10 nm. Bi4Ti3O12 phase began to form at 470 °C, and pure Bi4Ti3O12 was obtained after being calcined at 550 °C for 0.5 h. The powder obtained at 600 °C showed a tetragonal symmetry and a plate-like morphology with particle size of about 100 nm. Bi4Ti3O12 ceramics with 97.2% of theoretical density can be obtained by pressure-less sintering at 750 °C for 1 h, indicating the excellent sinterability of the prepared powder.