The structure and work principle of push-broom interferential imaging spectrometer was analyzed. It was found that the brightness of interferential data was non-uniform along the slit direction by the processed error of slit, the stripe noises along the push-broom direction were added on the restored spectral-image cube, image quality was degraded, and spectral information was difficult to evaluated. The corrected coefficient method was used to reduce stripes, and several coefficient-extracted methods were discussed. The non-uniformity of interferential data was extracted from the calibration of instruments, and the corrected coefficient was multipled by the interferential data to reduce the stripes. The results show that numerous stripes are reduced. Without the on-orbit calibration data, the coefficient is modified by the spectral-image cube contained uniform targets, and the remanent stripes are reduced efficiently by the modified coefficient.