Abstract： Objective To explore the significance of the digital three-dimensional reconstruction of presacral vessel and pelvic blood vessels based on magnetic resonance imaging. Methods Between February and May 2012，25 cases who underwent routine MRI examination for benign pelvic diseases were recruited. The ACHIEVA 3. 0TX MR was employed to perform the e? THRIVE3D voxel dynamic contrast?enhanced MRI sequence imaging. The presacral area of the vascular net was reconstructed by using the Software Minics 10.0.Results Presacral vessel three-dimensional reconstruction could clearly display the abdominal aorta, inferior vena cava, bilateral common iliac artery, external iliac and internal iliac artery and vein. The middle sacral artery was displayed in 18 cases, the middle sacral vein was displayed in 6 cases and the lateral stem vein was displayed partly. The middle sacral artery in 18 cases were all the small branches of common iliac artery. The diameter of median sacral artery was 2.3mm(1.2-3.6mm).The middle sacral vein was all opened into the left common iliac vein, and the diameter of median sacral veins was 3mm(1.7-4.6mm).Conclusions The e-THRIVE sequence of MRI used to scan pelvic blood vessel can reconstruct the three-dimensional model of pelvic blood vessel, and the display rate of the middle sacral artery is higher,and the middle sacral vein and lateral stem vein can be displayed in some cases .