Objectives : The main purpose of this study is to evaluate effects of acupuncture at Fengchi($GB_{20}$) and Houxi($SI_3$) for acute headache due to whiplash injury. Methods : This study was observed among 50 patients with acute headache due to whiplash injury who admitted to Bundang oriental medicine hospital of Dongguk University from June 16, 2009 to January 31, 2010. These patients were divided into two groups; One was control group that was acupunctured at general acupuncture points except Fengchi($GB_{20}$), Houxi($SI_3$)(Control group) and the other was acupunctured at Fengchi($GB_{20}$), Houxi($SI_3$) with general acupuncture points(Experimental group). Each patient was acupunctured once a day. The effect was assessed through self-rating headache index. Results & Conclusions : As a result of evaluation by using self-rating headache index, pain score at 8th day declined in both groups. But they were not difference between two groups at 8th day.