Tritium permeation barrier(TPB) has been always a hot topic in the development of D-T fusion reactor, which is used for the reduction of tritium permeation through structural materials. At present, ceramic materials are the first choice for TPB due to their low tritium permeability, corrosion resistance, high hardness and high thermal stability. Comparing to the non-oxide ceramics, oxide ceramics have advantages of high melting point, stable chemical properties, corrosion resistance and high permeation reduction factor(PRF), therefore, they have been widely studied as TPB. In this paper, the status and developent of the single and composite oxide ceramics as TPB are reviewed respectively, like Y2O3、Er2O3、Al2O3 and their composite, especially Al2O3 and its composite, which have been widely studied because of its excellent tritium resistance. This paper mainly analyzed the factors of influencing the performance of TPB and the mechanism of tritium permeation, including preparation technique, matrix effect and irradiation. In addition, the short comings of TPB in material preparation and service environment simulation are analyzed, the future priorities including the possible oxide ceramics as TPB are predicted to provide certain directions for the research and subsequent experiments.