A refrigerator comprising: a body defining a storage compartment therein; a first door hingedly provided at the body so as to open and close the storage compartment, the first door including a door frame having hinge holes (320, 330) formed therein; and a second door hingedly provided at the first door by means of an upper hinge and a lower hinge, the second door including a lateral side surface, the lateral side surface being at least partially fitted into the door frame, wherein each of the two hinges (510, 520) comprises: a hinge shaft (514, 524) disposed in the first door so as to define a rotational center of the second door; a hinge bracket (511, 521) coupled to the second door; and an indented member (513, 523) provided between the hinge shaft (514, 524) and the hinge bracket (511, 521), the indented member (513, 523) being moved through the hinge hole (320, 330) so as to allow the second door to be opened to the maximum opening degree which exceeds 90 degrees when the second door is opened, wherein the hinge bracket (511, 521) and the indented member (513, 523) are configured to have horizontal surfaces, and a vertical stepped wall (512, 522) is provided between the hinge bracket (511, 521) and the indented member (513, 523) such that the hinge bracket (511, 521) and the indented member (511, 521) are positioned at different levels, wherein the upper hinge bracket and the lower hinge bracket face an upper surface and a lower surface of the second door and the two vertical stepped walls (512, 522) face a lateral side surface of the second door. a body defining a storage compartment therein; a first door hingedly provided at the body so as to open and close the storage compartment, the first door including a door frame having hinge holes (320, 330) formed therein; and a second door hingedly provided at the first door by means of an upper hinge and a lower hinge, the second door including a lateral side surface, the lateral side surface being at least partially fitted into the door frame, wherein each of the two hinges (510, 520) comprises: a hinge shaft (514, 524) disposed in the first door so as to define a rotational center of the second door; a hinge bracket (511, 521) coupled to the second door; and an indented member (513, 523) provided between the hinge shaft (514, 524) and the hinge bracket (511, 521), the indented member (513, 523) being moved through the hinge hole (320, 330) so as to allow the second door to be opened to the maximum opening degree which exceeds 90 degrees when the second door is opened, wherein the hinge bracket (511, 521) and the indented member (513, 523) are configured to have horizontal surfaces, and a vertical stepped wall (512, 522) is provided between the hinge bracket (511, 521) and the indented member (513, 523) such that the hinge bracket (511, 521) and the indented member (511, 521) are positioned at different levels, wherein the upper hinge bracket and the lower hinge bracket face an upper surface and a lower surface of the second door and the two vertical stepped walls (512, 522) face a lateral side surface of the second door. a hinge shaft (514, 524) disposed in the first door so as to define a rotational center of the second door; a hinge bracket (511, 521) coupled to the second door; and an indented member (513, 523) provided between the hinge shaft (514, 524) and the hinge bracket (511, 521), the indented member (513, 523) being moved through the hinge hole (320, 330) so as to allow the second door to be opened to the maximum opening degree which exceeds 90 degrees when the second door is opened, wherein the hinge bracket (511, 521) and the indented member (513, 523) are configured to have horizontal surfaces, and a vertical stepped wall (512, 522) is provided between the hinge bracket (511, 521) and the indented member (513, 523) such that the hinge bracket (511, 521) and the indented member (511, 521) are positioned at different levels, wherein the upper hinge bracket and the lower hinge bracket face an upper surface and a lower surface of the second door and the two vertical stepped walls (512, 522) face a lateral side surface of the second door.