CeO 2 -MO x (M = Mn, Fe, Ni, Cu) reactive ceramics, having high melting points and high conductivities of O 2− , were synthesized with the combustion method from their nitrates for solar hydrogen production. The prepared CeO 2 -MO x samples were solid solutions between CeO 2 and MO x with the fluorite structure through XRD. Two-step water splitting reactions with CeO 2 -MO x reactive ceramics proceeded at 1573–1773K for the O 2 releasing step and at 1273K for the H 2 generation step by irradiation of infrared imaging furnace as a solar simulator. The amounts of O 2 evolved in the O 2 releasing reaction with CeO 2 -MO x and CeO 2 systems increased with the increase of the reaction temperature. The amounts of H 2 evolved in the H 2 generation reaction with CeO 2 -MO x systems except for M = Cu were more than that of CeO 2 system after the O 2 releasing reaction at the temperatures of 1673 and 1773K. The largest amount of H 2 was generated with CeO 2 -NiO after the O 2 releasing reaction at 1573, 1673 and 1773K. The O 2 releasing reaction at 1673K and H 2 generation reaction at 1273K with CeO 2 -Fe 2 O 3 were repeated four times with the evolving of O 2 (1.3cm 3 /g-sample) and H 2 (2.3cm 3 /g-sample) gases, respectively. The possibility of solar hydrogen production with CeO 2 -MO x (M = Mn, Fe, Ni) reactive ceramics system by using concentrated solar thermal energy was suggested.