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 (61B, 62B) is inserted in the pivotally support hole portion (H20B, H43), a fastening member (61A, 62A) that fastens the angle adjustment member (20, 40) is inserted in the regulating hole portion (H20A, H42), the angle adjustment member pivots with the shaft member (61B, 62B) 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 (61A, 62A) to adjust a fastening condition of the fastening member (61A, 62A) 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 (61B, 62B) is inserted in the pivotally support hole portion (H20B, H43), a fastening member (61A, 62A) that fastens the angle adjustment member (20, 40) is inserted in the regulating hole portion (H20A, H42), the angle adjustment member pivots with the shaft member (61B, 62B) 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 (61A, 62A) to adjust a fastening condition of the fastening member (61A, 62A) through the through hole (14A1, 14A2).