Therefore, in CABG cases having severe carotid arterial stenosis which have to operate in the same time, we have studied the operative technique for endarterectomy of carotid arterial stenosis in CABG to avoid and cure the stroke after operation. Material and Method: at the Cardiac surgery Department of Cho Ray Hospital the prospective study performed from 1 - 1 - 2009 to 9 - 9-2010.