Door-in-door refrigerator

A door-in-door refrigerator, comprising:

• a cabinet, provided with a cabinet opening and a control portion;
• a main door, disposed on the cabinet, to close or open the cabinet opening, wherein the main door is provided with a main door electric component;
• a main door hinge, to rotatably connect the main door to the cabinet;
• a secondary door, disposed on the main door, wherein the secondary door is provided with a secondary door electric component;
• a secondary door hinge, to rotatably connect the secondary door to the main door;
• and
• a wire harness, comprising a secondary door wire harness and a main door wire harness, wherein the secondary door wire harness is employed to connect the secondary door electric component to the control portion and the main door wire harness is employed to connect the main door electric component to the control portion;
• wherein the secondary door wire harness passes through the main door hinge and the secondary door hinge, and the main door wire harness passes through the main door hinge.