To provide a heating cooker including two electric components at a lower surface side of a top plate, and capable of properly cooling these two electric components.SOLUTION: A sensor case 40 fixed to a lower surface of a top plate includes a substrate housing portion 50 for housing an electric substrate 100, on a top surface of a front side portion 44 of a main body portion 41, and includes a sensor housing portion for housing sensors 31-39, on a lower surface of a rear side portion 45. In a passage of the substrate housing portion 50, cooling air supplied from intake ports of a left cylindrical portion 42 and a right cylindrical portion 43 flows, and is discharged to a front side from front-side discharge ports 54A, 54B. In a passage of the sensor housing portion, a part of the cooling air flowing from the intake ports through a...