Refrigerator and home appliance

A home appliance comprising:

• a cabinet having a storage space;
• a main door configured to open and close at least a portion of the storage space;
• a sub door rotatable with respect to the main door;
• a main hinge device configured to allow the main door to rotate with respect to the cabinet;
• and
• a sub hinge device configured to allow the sub door to rotate with respect to the main door,
• wherein the main hinge device includes:
• a hinge body installed at the cabinet,
• a pin unit provided at one of the hinge body and the main door, and
• a pin slot in which the pin unit is received and provided at another of the hinge body and the main door,
• wherein the sub hinge device includes a hinge pin that provides a rotation center for the sub door, and
• wherein, during an opening process of the main door, relative positions of the pin slot and the pin unit vary, and a rotation center of the main door moves.