A door configured to open and close a cooking chamber of a cooking appliance, comprising: a door panel configured to form a frame of the door, at which an open window is formed inside the door panel, configured to be pivoted centering on a lower end portion in one direction or in another direction, and configured to open and close an open front surface of a main body of the cooking appliance; a hinge member configured to pivotably couple the door panel to the main body; a handle installed at an outer surface of the door panel; a connection mechanism installed at an inner surface of the door panel and provided to connect the handle to the hinge member at a lateral outer side of the open window; a first choke part installed at the inner surface of the door panel, and disposed at a vertical outer side of the open window; a second choke part installed at the inner surface of the door panel and disposed at the lateral outer side of the open window, characterised in that said second choke part is disposed between the open window and the connection mechanism; and a cover frame installed at the inner surface of the door panel, configured to accommodate the connection mechanism inside the cover frame and form side walls at the vertical outer side of the first choke part and the lateral outer side of the second choke part, wherein each of the first choke part and the second choke part includes: a choke lower surface (a) extending from the side wall formed by the cover frame in a width direction of the door panel; a choke inner surface (b) extending from the choke lower surface (a) in a thickness direction of the door panel; and choke upper surfaces (c)(d), each of which extends from the choke inner surface (b) in a direction toward the cover frame, and the second choke part further include a choke extending surface (e) extending from each of the choke upper surfaces (c)(d). a door panel configured to form a frame of the door, at which an open window is formed inside the door panel, configured to be pivoted centering on a lower end portion in one direction or in another direction, and configured to open and close an open front surface of a main body of the cooking appliance; a hinge member configured to pivotably couple the door panel to the main body; a handle installed at an outer surface of the door panel; a connection mechanism installed at an inner surface of the door panel and provided to connect the handle to the hinge member at a lateral outer side of the open window; a first choke part installed at the inner surface of the door panel, and disposed at a vertical outer side of the open window; a second choke part installed at the inner surface of the door panel and disposed at the lateral outer side of the open window, characterised in that said second choke part is disposed between the open window and the connection mechanism; and a cover frame installed at the inner surface of the door panel, configured to accommodate the connection mechanism inside the cover frame and form side walls at the vertical outer side of the first choke part and the lateral outer side of the second choke part, wherein each of the first choke part and the second choke part includes: a choke lower surface (a) extending from the side wall formed by the cover frame in a width direction of the door panel; a choke inner surface (b) extending from the choke lower surface (a) in a thickness direction of the door panel; and choke upper surfaces (c)(d), each of which extends from the choke inner surface (b) in a direction toward the cover frame, and the second choke part further include a choke extending surface (e) extending from each of the choke upper surfaces (c)(d). a choke lower surface (a) extending from the side wall formed by the cover frame in a width direction of the door panel; a choke inner surface (b) extending from the choke lower surface (a) in a thickness direction of the door panel; and choke upper surfaces (c)(d), each of which extends from the choke inner surface (b) in a direction toward the cover frame, and the second choke part further include a choke extending surface (e) extending from each of the choke upper surfaces (c)(d).