The invention discloses an automotive wheel center actual driving displacement measuring and extracting method which comprises the following steps of a, mounting an acceleration sensor on a wheel center position of a to-be-tested automotive wheel and sampling acceleration data of the wheel center; b, performing smoothing processing on sampled acceleration data, and eliminating high-frequency noise; c, performing Fourier transform on a time domain signal of the acceleration data after smoothing processing in the step b for obtaining a frequency domain signal; d, performing two times of integration on the frequency domain signal for obtaining a wheel center displacement component; and e, performing inverse Fourier transform on the wheel center displacement component for obtaining a wheel center actual driving displacement signal. The automotive wheel center actual driving displacement measuring and extracting method has advantages of high convenience in mounting the sensor, relatively high detection sensitivity, relatively wide sampling frequency range and relatively low influence by environment factors. Furthermore, a Welch method is utilized for accurately determining a passband frequency range in integral transformation, eliminating high-frequency noise, improving integral transformation accuracy and improving measurement accuracy.