Eastern Taiwan serpentine and mica mixture was used to synthesize cordierite by solid state reaction. The ceramics were prepared from the synthesized powders. Results showed that cordierite can be synthesized from serpentine and mica mixtures at temperatures above 1250℃. The cordierite ceramics were sintered at 1250℃ for 6 hours. The density is 90% of the theoretical density and the thermal expansion coefficient is about 1.05x10^(-6).