Abstract: Objective: to evaluate the characteristics of MSCT imaging of 1ithopedion in peritoneal cavity so as to improve the understanding of the disease. Methods: The clinical presentation of a 1ithopedion patient in our hospital was analyzed retrospectively and axial, MPR, VR, MIP imaging characteristics of MSCT about 1ithopedion were summarized with reference to literature review. Results: The cases of axis of MSCT probably have shown in the image to see a mixed density with clear boundary, which mainly see bone and calcification tissue; limb long bone was clearly emerged. it was directly displayed with post processing image in the spine, rib, and limb long bone, calcification of embryolemma. Conclusion: MSCT imaging of 1ithopedion has high diagnostic value; especially post-processing techniques can directly provide 1ithopedion imaging characteristic.