The ceramic composite which has a super high dielectric constant was prepared by compounding and sintering Acetylene Black(AB) and BaTiO3 together in the protective atmosphere. Microstructure and morphology of the composite were measured by XRD and SEM, and the dielectric properties were measured by LCZ meter. The results indicate that the prepared samples, are much difficult to form BaTiO3/AB composites when sintering in air atmosphere and at high temperature, because AB is oxidated and volatilized under t...