Metal supported solid oxide fuel cells (MS-SOFCs) were fabricated with NiO and Fe₂O₃ by tape casting, screen printing, sintering and in-situ reducing process with NiO and Fe₂O_3. The fraction effects of Fe on residual stress, bending strength and electrochemical stability of MS-SOFC were systematically investigated. The addition of 10at% Fe₂O₃ in characteristic support elevated densification starting temperature up to 937 ℃, and reduced residual stress and buckling deformation to 70 MPa and 0.15 mm, respectively. After reduction, Ni_0.9Fe_0.1supported SOFC presented the maximum bending strength of 62.34 MPa due to the lowest porosity of 40.22% in metal scaffold. MS-SOFC steadily operated for 60 h in durability test with H₂ as the fuel at a constant current density of 400 mA·cm ^-2 and 650 ℃. This superior performance was attributed to the higher fracture strength of Ni_0.9Fe_0.1 alloy support SOFC, which effectively resisted the thermal stress in operation. This research provides a promising theoretical basis for structure design and optimization of MS-SOFC.