A heating cooking apparatus comprising: a heating cooking chamber including an accommodation space configured to accommodate an object to be heated, an opening communicating with the accommodation space , and a first surface disposed on an outer circumference of the opening ; a housing configured to accommodate the heating cooking chamber ; a microwave supply unit configured to supply microwaves to an interior of the heating cooking chamber ; and a pull-out body unit , wherein the pull-out body unit includes a pull-out body including a second surface and configured to be pulled out freely relative to the heating cooking chamber , the second surface facing the first surface , and an angle adjustment member configured to adjust an angle of the second surface relative to the first surface , characterized in that the housing includes a through hole (14A1, 14A2, 14B1, 14B2), the angle adjustment member includes a pivotally support hole portion (H20B, H43) with which the angle adjustment member is pivotally supported to the housing , and a regulating hole portion (H20A, H42) configured to regulate a pivot direction of the angle adjustment member, a shaft member is inserted in the pivotally support hole portion (H20B, H43), a fastening member that fastens the angle adjustment member is inserted in the regulating hole portion (H20A, H42), the angle adjustment member pivots with the shaft member as a center, the regulating hole portion (H20A, H42) is an elongate hole, in a state where the first surface and the second surface abut against each other, the through hole (14A1, 14A2, 14B1, 14B2) faces the fastening member to adjust a fastening condition of the fastening member through the through hole (14A1, 14A2). a heating cooking chamber including an accommodation space configured to accommodate an object to be heated, an opening communicating with the accommodation space , and a first surface disposed on an outer circumference of the opening ; a housing configured to accommodate the heating cooking chamber ; a microwave supply unit configured to supply microwaves to an interior of the heating cooking chamber ; and a pull-out body unit , wherein the pull-out body unit includes a pull-out body including a second surface and configured to be pulled out freely relative to the heating cooking chamber , the second surface facing the first surface , and an angle adjustment member configured to adjust an angle of the second surface relative to the first surface , characterized in that the housing includes a through hole (14A1, 14A2, 14B1, 14B2), the angle adjustment member includes a pivotally support hole portion (H20B, H43) with which the angle adjustment member is pivotally supported to the housing , and a regulating hole portion (H20A, H42) configured to regulate a pivot direction of the angle adjustment member, a shaft member is inserted in the pivotally support hole portion (H20B, H43), a fastening member that fastens the angle adjustment member is inserted in the regulating hole portion (H20A, H42), the angle adjustment member pivots with the shaft member as a center, the regulating hole portion (H20A, H42) is an elongate hole, in a state where the first surface and the second surface abut against each other, the through hole (14A1, 14A2, 14B1, 14B2) faces the fastening member to adjust a fastening condition of the fastening member through the through hole (14A1, 14A2). <EOS>