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Based on XRD, XPS, H2-TPR and other characterization methods for physical and chemical properties and catalyst activity evaluation methods, the physical and chemical properties and catalytic activity of CDPF samples doped with different bimetal oxide under hydrothermal aging condition were studied. The results show that Ce-Zr bimetal oxide doped sample has good stability in phase structure and cell parameters, Zr-Fe bimetal oxide doped sample can better inhibit the dispersity of noble metal on carrier’s surface. For Fe-Ce and Zr-Fe bimetal oxide doped CDPF samples, during high-temperature aging process, the dispersed metal oxides undergo solid solution again, which will cause a formation of solid solution and more oxygen vacancies. After experiencing high-temperature hydrothermal aging process, the diffraction characteristic peaks of samples all migrate various degrees towards the high-temperature direction. Fe-Ce bimetal oxide doped sample shows a low degree of migration while Ce-Zr bimetal oxide doped sample is higher. Fe-Ce and Zr-Fe bimetal oxide doped aged samples showed higher oxidation activity of CO and show a low-level degradation. Ce-Zr bimetal oxide doped aged sample showed a slight decrease in the oxidation activity of C3H8. The catalytic activity for NO of Ce-Zr bimetal oxide doped sample decreases slightly after high-temperature hydrothermal aging process.