Mixture of zinc metatitanate and rutile (ZnTiO₃ + 0.2TiO₂), had been prepared via the conventional solid-state reaction method. The sintering behavior and microwave dielectric properties of ZnO–TiO₂ system were investigated. The composition and microstructure of ceramics were discussed with XRD and SEM. It was found that ZnO–TiO₂ ceramics, which was sintered at 900°C using 1.0 wt% B₂O₃ as sintering additive, had homogeneously fine microstructures and high densification. Samples possessed excellent microwave dielectric properties: ε _r = 26, Q × f = 34,890 GHz, and τ _f = −11 ppm/°C. The above- mentioned material was suitable for the tape casting process and compatible with Ag electrodes, therefore, was an excellent candidate for multilayer ceramic capacitor applications.