In order to develop dielectric ceramics with temperature-stable permittivity characteristics, Eu and Ti codoped K 0.5 Na 0.5 NbO 3 [(1 -x)K 0.5 Na 0.5 NbO 3 -xEuTiO 3 ] ceramics were prepared by a conventional solid state route. The effect of EuTiO 3 on the phase structure and dielectric performance of KNN ceramics were investigated. The temperature dependence of the relative permittivity illustrated that the small amount of EuTiO 3 depressed the dielectric peak of ferroelectric-paraelectric transition. Therefore, the temperature stability and relative permittivity of ceramics were effectively improved. As x = 0.03, the ceramic showed superior dielectric temperature stability (±10 %), very low dielectric loss (0.008 at 250°C) and a relatively high permittivity ([1500 at 250°C) over the temperature range from *100 to 350°C. It suggests that this ceramic is a promising candidate for high-temperature capacitor application.