A washing machine not only may properly suppress vibration of an outer drum, but also may be easier to assemble due to a simple structure, thereby realizing reduction of the manufacturing cost. A washing machine including elastic supporting units for elastically supporting the outer drum to a main body includes: a plurality of extension springs arranged between the outer drum and the main body and capable of applying a counteracting force to the outer drum to enable the outer drum to return to an original position when a displacement of the outer drum is transmitted to the extension springs; and a displacement transmission unit capable of transmitting the displacement of the outer drum to the extension springs only when the displacement of the outer drum is larger than a specified value. The extension springs have a preset initial tension.