The invention discloses a multi-channel stepped electric gas control valve which mainly comprises a valve shell, a speed reducing motor, a locator, an
airflow distributor and a circular disk thereof and a locator rotational angle detection mechanism, wherein one side surface of the valve shell provided with a plurality of gas outlets is vertical to the driving shaft of the motor; the center lines of the driving shaft, the locator and the
airflow distributor and the circular disk thereof are superposed; the circular disk is provided with starting holes and a plurality of groups of
airflow distribution hole slots the number of which is the same as that of the gas outlets, wherein each hole slot is provided with through holes with different cross-section areas; the circular disk is closely clung to a rigid hollow
washer arranged at the inner end opening of each gas outlet; locating joints which correspond to each group of hole slots with the same serial number are arranged on the outer periphery of the locator, and a locating end is arranged in the corresponding valve shell. The gas control valve is controlled exactly by action position feedback signals and a
control circuit, multi-level stepped gas flow control can be carried out on a plurality of paths of gas channels, and the plurality of paths of gas channels can be shut off separately.