SSRF X-ray imaging beamline (BL13W) is composed of, a 2.0 Tesla wiggler, double crystal monochromator(DCM) cooled with liquid nitrogen, 6 set of filters to reduce high heat load on Be window and DCM. The photon energy range is of 8-72.5keV.Three sets of digital X-ray detectors are employed with the pixel size range from 0.37 to 13 micrometer. Imaging methods of micro-CT, in-line phase contrast imaging and X-ray fluorescence computed tomography (XFCT) could be provided for biomedical, material and paleontology samples.