Abstract: Objective To study the feasibility and effectiveness of endovascular treatment to blood blister-like aneurysms (BBA) in internal carotid artery. Methods Retrospective analyzed the clinical features, outcomes, and complications of 20 cases of BBA treated with endovascular intervention techniques from 2013-2015 in our center. Results The patients were treated with covered stent, internal carotid artery balloon occlusion, and stents assisted coiling, respectively. One death occurred after the patient accepted covered stent treatment, another 2 death was due to vasospasm after internal carotid artery balloon occlusion, and double stents assisted coiling, respectively. The modified Rankin Scale (mRS) score when patients being discharged were 0-2 in 15 cases, and 3-4 in 2 cases. There were 17 cases with clinical follow-up from 1 to 26 months (9.3 months on average), the mRS scores were all less than 2 points. 16 cases accepted angiographic review. 14 cases had BBA totally occluded, 1 case had stable neck residue, and 1 case had incompleted occlusion and the aneurysm dwindled at follow-up. Conclusion Stent-assisted coiling is feasible and effective in the treatment of BBA in internal carotid artery.