Abstract: The invention relates to a method for detecting the pre-ignition of an internal combustion engine comprising: integrating all instantaneous angular accelerations in a feature window to acquire integral values, and judging whether the internal combustion engine is pre-ignited according to the integral values and an pre-ignition threshold in a detection window; the feature window is an angle range corresponding to a top dead center of the compression stroke of the internal combustion engine to 3-5 consecutive signal teeth backward from the top dead center along the rotating direction of a crankshaft; the instantaneous angular accelerations correspond to the signal teeth in the feature window in a one-to-one manner.