Abstract: With a view of overcoming the disadvantages of X-ray images, such as low contrast and lack of details of the workpiece caused by scattering a separate scattering algorithm of blind parameter estimating was raised against the separation of the scattering light in the degraded image. Based on the assumption that image was composed of independent scattering spectrum, a blind signal separate model was set up, which estimated blind parameter indirectly with the sub-band image caused by wavelet transform, by analyzing the scattering polarization. The results of theoretical analyses and experiment showed that this algorithm, in addition to restraining the scattering, improved effectively the contrast and definition of image.