[en] Objective: To discuss the technique for cerebral artery spiral CT angiography and the clinical application. Methods: Fifty-five cases of cerebral angiography using spiral CT were studied, including 16 cases of healthy subjects, 12 cases of arteriovenous malformation, 2 cases of aneurysm, 19 cases of cerebral neoplasm, 3 cases of embolism, and 3 others. Three-dimensional images of cerebral artery were reconstructed. Results: (1) The images quality of CTA was related to scanning methods. (2) CTA could clearly show 1-4 grades cerebral artery structures. (3) Enlarged and curved blood vessels were showed on the CTA images of AVM. Three -dimensional reconstructed images could demonstrate the location, shape, and size of aneurysm. (4) The CTA images of cerebral neoplasms showed clearly the displaced vessels and tumor vessels on the surface. (5) Location of the emboli could be seen. Conclusion: CTA images can be rotated and viewed from different directions. Diagnostic information is attained from 2-dimensional and 3-dimensional images. CTA can possibly replace DSA and becomes the initial modality of choice in cerebral vessel diseases