A refrigerator, comprising: a refrigerator body having a cooling chamber; and a cooling chamber door provided with an opening portion to open or close the cooling chamber, the cooling chamber door comprises: a door configured to open or close the opening portion, the door is rotatable around a rotational shaft that extends in a vertical direction with respect to the cooling chamber door; and a support (180, 210) provided at the opening portion, the support (180, 210) is rotatable around a rotational shaft that extends in a horizontal direction with respect to the cooling chamber door, the support is disposed in a support position to support articles or foods when the door is open, and in a withdrawn position when the door is closed, characterized in that the support is revolved to the support position by its own weight when opening the door, wherein a support contact portion is provided at the door which is contacting and pressing the support to the withdrawn position when closing the door, the cooling chamber door comprises a damper configured to exert resistance to the rotation of the support (180, 210), the damper is provided at the rotational shaft of the support, the damper comprises a coil spring, wherein one end of the coil spring is fixed to the support (180, 210), and the other end the coil spring is fixed to the opening portion, wherein the coil spring stores an elastic force while being compressed along the rotational direction of the rotational shaft during the downward revolution of the support (180, 210), so that the elastic force of the coil spring is exerted in a direction opposite to the downward revolution of the support (180, 210), the support comprises: a support body rotatably provided at the opening portion; and an extension portion that extends from the support body and configured to rotate with respect to the support body, wherein the support contact portion comprises a press portion inclined upward with respect to the support to press the extension portion in an upward direction by closing of the door to revolve the extension portion with respect to the support body and a guide portion that extends upward from the press portion and guides the support, wherein the press portion and the guide portion are configured to press the support body in the upward direction by additional closing of the door to revolve the support body with respect to the opening portion. a refrigerator body having a cooling chamber; and a cooling chamber door provided with an opening portion to open or close the cooling chamber, the cooling chamber door comprises: a door configured to open or close the opening portion, the door is rotatable around a rotational shaft that extends in a vertical direction with respect to the cooling chamber door; and a support (180, 210) provided at the opening portion, the support (180, 210) is rotatable around a rotational shaft that extends in a horizontal direction with respect to the cooling chamber door, the support is disposed in a support position to support articles or foods when the door is open, and in a withdrawn position when the door is closed, a door configured to open or close the opening portion, the door is rotatable around a rotational shaft that extends in a vertical direction with respect to the cooling chamber door; and a support (180, 210) provided at the opening portion, the support (180, 210) is rotatable around a rotational shaft that extends in a horizontal direction with respect to the cooling chamber door, the support is disposed in a support position to support articles or foods when the door is open, and in a withdrawn position when the door is closed, characterized in that the support is revolved to the support position by its own weight when opening the door, wherein a support contact portion is provided at the door which is contacting and pressing the support to the withdrawn position when closing the door, the cooling chamber door comprises a damper configured to exert resistance to the rotation of the support (180, 210), the damper is provided at the rotational shaft of the support, the damper comprises a coil spring, wherein one end of the coil spring is fixed to the support (180, 210), and the other end the coil spring is fixed to the opening portion, wherein the coil spring stores an elastic force while being compressed along the rotational direction of the rotational shaft during the downward revolution of the support (180, 210), so that the elastic force of the coil spring is exerted in a direction opposite to the downward revolution of the support (180, 210), the support comprises: a support body rotatably provided at the opening portion; and an extension portion that extends from the support body and configured to rotate with respect to the support body, a support body rotatably provided at the opening portion; and an extension portion that extends from the support body and configured to rotate with respect to the support body, wherein the support contact portion comprises a press portion inclined upward with respect to the support to press the extension portion in an upward direction by closing of the door to revolve the extension portion with respect to the support body and a guide portion that extends upward from the press portion and guides the support, wherein the press portion and the guide portion are configured to press the support body in the upward direction by additional closing of the door to revolve the support body with respect to the opening portion.