The preparation of ceria-based composite membranes by means of tape-casting technique and their oxygen permeation and methane reforming properties have been investigated. Oxide powders comprising of Ce1-xRE xO2-δ (RE = Pr and Sm) and spinel-type ferrites of MFe 2O4 (M = Mn and Co) were prepared by the citrate-based liquid-mix technique. As a result of the optimization of ceramics slurry composition, a crack-free dense membrane with dimensions of 5 cm × 5 cm and 140 μm in thickness was successfully prepared by means of doctor-blade technique. For Ce0.9Sm0.1O2-δ - 15 vol% MnFe2O4 membrane with a thickness of 133 μm, an oxygen flux density of 9.5 μmol/cm2 s was attained at 1000°C under Ar-10%CH4 (100 seem). The methane conversion and CO selectivity were 22 and 93 %, respectively. Laminated membranes comprising of Ce 0.9Sm0.1A2-δ - 15 vol% MnFe 2O4 and Ce0.9Sm0.1O 2.δ -30 vol% CoFe2O4 were also prepared. The laminated membrane with one Ce0.9Sm0.1O 2.δ - 30 vol% CoFe2O4 layer showed a higher oxygen flux density by a factor of 40 % than that without Ce 0.9Sm0.1O2.δ - 30 vol% CoFe 2O4 layer.