A type of new low sintering temperature ceramic, Li ₂ TiO ₃ ceramic, has been found. Although it is difficult for the Li ₂ TiO ₃ compound to be sintered compactly at temperatures above 1000°C for the volatilization of Li ₂ O, dense Li ₂ TiO ₃ ceramics were obtained by conventional solid‐state reaction method at the sintering temperature of 900°C with the addition of ZnO–B ₂ O ₃ frit. The sintering behavior and microwave dielectric properties of Li ₂ TiO ₃ ceramics with less ZnO–B ₂ O ₃ frit (≤3.0 wt%) doping were investigated. The addition of ZnO–B ₂ O ₃ frit can lower the sintering temperature of the Li ₂ TiO ₃ ceramics, but it does not apparently degrade the microwave dielectric properties of the Li ₂ TiO ₃ ceramics. Typically, the good microwave dielectric properties of ɛ _r =23.06, Q × f =32 275 GHz, τ _f = 35.79 ppm/°C were obtained for 2.5 wt% ZnO–B ₂ O ₃ frit‐doped Li ₂ TiO ₃ ceramics sintered at 900°C for 2 h. The porosity was 0.08%. The Li ₂ TiO ₃ ceramic system may be a promising candidate for low‐temperature cofired ceramics applications.

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