Abstract: BiFeO₃ / Bi₄Ti₃O₁₂ multilayer film was prepared on FTO/glass bottom electrodes by sol-gel process. Structure, ferroelectric and Dielectric properties at room temperature were studied by comparing with pure BiFeO₃ film. BiFeO₃ and Bi₄Ti₃O₁₂ phase can be identified from the XRD pattern. Comparing with pure BiFeO₃ film, the BiFeO₃ /Bi₄Ti₃O₁₂ and Bi₄Ti₃O₁₂/BiFeO₃ multilayer film can endure higher applied field and thus getting fully polarization and show more intense ferroelectricity, Under an applied field of 450 kV/ cm, the remnant polarizations are 37μC/cm² and 23μC/cm² , respectively.