Endovascular coiling is one of the recent methods for treating cerebral aneurysm and this method is considered to be an alternative method for treating aneurysms. Yet there are several disadvantages of endovascular coiling. As is well known, a wide-necked aneurysm is not completely treated with endovascular coiling. Infarction of the parent artery due to coil compaction, recanalization and embolization is a significant problem of endovascular coiling for a wide-necked aneurysm. Wide-necked aneurysms have been recently treated with stent assisted coil embolization. Stent-assisted coil embolization results in a higher rate of complication. In this case report, we present a case with complication after stent-assisted endovascular coiling. We concluded that precise, cautious procedures are needed when performing complicated stent assisted endovascular coiling to prevent thromboembolic complications.