The ceramic material of the present invention is a ceramic composition of magnesium, aluminum, oxygen and nitrogen in the main component, to a crystalline phase of the aluminum nitride is employed MgO-AlN solid solution in the magnesium oxide as a main phase. MgO-AlN solid solution, 200 when using a CuKα line, and surface 220 is between XRD peaks, each peak of the cubic crystal of aluminum nitride and the magnesium oxide surface of the cubic peak 2θ = 42.9˚~44.8˚, preferred to that shown in 62.3˚~65.2˚, and it is preferable that that the XRD peaks of the (111) plane that appears in the 2θ = 36.9˚~39˚ is between the peak of aluminum nitride and the magnesium oxide cubic cubic peak .