Abstract: <b<Purpose:</b< To evaluate the function of 3D Reconstruction for spiral CT imaging of cerebral-vascular disease. <b<Method:</b< The authors treated with 3D image reconstruction for 51 clinical cerebral patients after their brain enhanced CT scan and carry on the analysis,all examination using the GE Hispeed NX/I 2-slices CT scanner;transfer that image data to the work-station and carry on the 3D reconstruction.These images were examined by more than 2 radiological doctors,and analyzed. <b<Results:</b< In these 51 cerebral patients,there are cerebral normal 14 cases;pure-single variation 7 cases;others have the different degree cerebral-vascular changed to narrow(30 cases),Among them,the hybrid type narrow changed 12 cases;(more than two or contain two cerebral blood branch vessel narrow changed),the cerebral variation combined with cerebral vessel narrowing 5 cases,the cerebral one branch change to narrow down 13 cases. <b<Conclusion:</b< 3D image reconstruction for brain enhanced CT scan is an efficient examination method for cerebral-vascular diseases by using of spiral CT.