Objective To investigate the effects of interventional hybrid operation in the treatment of intracranial complex aneurysms and to observe the evaluation value of digital subtraction angiography (DSA) before and after surgical treatment. Methods 17 patients (23 aneurysms) with intracranial aneurysms were treated with SolitaireAB stent assisted coil embolization. The differences in the detection rate of intracranial aneurysms between 2D digital subtraction angiography (2D-DSA) and 3D digital subtraction angiography (3D-DSA) were compared. Results Among the 17 patients with pathologically confirmed intracranial aneurysms, 16 patients were detected by 2D-DSA. 1 case of small bleeding blister like wide carotid aneurysm was missed diagnosed because the lesion was too small and the accuracy rate was 94.12%. All were detected by 3D-DSA and the accuracy rate was 100.0%. However, there was no significant difference between the two detection methods (t=1.030, P=0.310). 15 cases of wide carotid aneurysms reached tight embolization during operation; 2 patients with large wide carotid aneurysms without ruptured internal carotid artery were given relatively looser packing. 1 patient with wide carotid aneurysm in bilateral middle cerebral artery was treated with craniotomy for removing hematoma and decompressive craniectomy after embolotherapy because of preoperative massive hemorrhage. There were no deaths in the whole group. The patients were followed up for 3-30 months after operation. 16 patients returned to work and 1 patients were in persistent coma (treated for 3 months). DSA reexamination found that 16 cases of aneurysms disappeared and there still was blood perfusion in tumor cavity of 1 patients with wide internal carotid aneurysms treated with loose packing but the aneurysm was not enlarged. Conclusion Stent assisted coil embolization technique can effectively improve the success rate of embolotherapy for treating intracranial complex wide carotid aneurysms. It can effectively prevent rebleeding and increase the cure rate of complex aneurysms. During the treatment, the application of DSA technique can ensure the safety of the treatment and make reliable judgments to prognosis.