A method for forming an interconnect of a solid oxide fuel cell includes the following steps. First of all, a powder mixture substantially including equal to or more than 90 wt % chromium powder, with the balance being iron powder and inevitable impurities, is provided. Then the powder mixture is pressurized by a pressing process with a pressure equal to or over 8 mt/cm2 to form a green interconnect with a density being equal to or over 90% of the theoretical density. Next the green interconnect is sintered by a sintering process to form an interconnect body. Finally, a protection process is performed on at least one surface of the interconnect body to form an interconnect.