microwave and a wave guide tube that transmits the microwave generated by the magnetron the microwave generated by the magnetron passes through the wave guide tube and supplied from a power supply port into the heating chamber the heating cooker includes slide mechanisms 4 4 arranged on both the right and left external sides of the heating container 3 and a slide mechanism 4 see fig3 arranged on the bottom side in order to move the drawer body 2 within the cooker body 1 each slide mechanism 4 although it is not shown in details is a nested mechanism including slide rails in which a movable rail is slidable relative to a fixed rail the drawer body 2 can be moved between the fully opened position where the heating container 3 is fully pulled out from the heating chamber and the fully closed position where the heating container 3 is fully pushed into the heating chamber when the drawer body 2 is positioned at the fully closed position the door 2 a closes the opening portion 10 of the heating chamber so the internal space of the heating chamber is sealed by the inner walls of the cooker body 1 and the drawer body 2 the slide mechanisms 4 are provided in passage boxes formed on the right and left sides and the bottom side of the heating chamber in the cooker body 1 and the fixed rails are attached on the outsides of the heating chamber in the passage boxes and the movable rails can appear from the passage boxes together with the drawer body 2 the drawer body 2 is supported by the cooker body 1 via the slide mechanisms 4 and can be pulled out from the heating chamber in a stable manner as.