Method for preventing automobile from being anoxic and automobile electrical control unit

The invention provides a method for preventing an automobile from being anoxic. The method comprises the following steps: receiving a signal for indicating operating condition of an automobile; judging whether the operating condition of the automobile reaches to a predetermined condition or not according to the signal; conducting anoxic preventing control when the operating condition of the automobile reaches the predetermined condition, wherein the predetermined condition at least comprises the following items: the automobile speed is 0, automobile gear is P gear, or N gear or the hand brake is in a pulling condition, internal/external loop warm/cold air of the automobile is opened, the engine is in an idle working condition when the water temperature is higher than predetermined temperature, and the engine is in an air-fuel ratio close-loop control condition. The invention further provides an automobile electrical control unit (ECU) for actuating the method.