ObjectiveTo observe carotid endarterectomy function in different stages of hypertension patients by high frequency ultrasound and discuss the possible mechanism and the correlation.Methods400 cases of patients with high blood pressure were selected as observation group,according to the international standard of classification of high blood pressure,who were divided intothree groups,and there were 216,112,72 cases in grade 1,2,3 group,120 healthy cases were chosen as controls,then the carotid endarterectomy function were detected by using high-frequency ultrasound,and the results were analyzed.ResultsThe difference of the carotid endarterectomy function between the observation group and the control group was statistically significant (P<0.01);The difference among carotid endarterectomy function of grade 1,2 and 3 group was statistically significant(P<0.01);The difference between carotid endarterectomy function of grade 1,2 group was significant (P<0.05).ConclusionThe carotid endarterectomy function of patients with high blood pressure change more obvious than patients with normal blood pressure,meanwhile,as the blood pressure rise,the carotid endarterectomy function drop more apparently,it suggests that they are closely to each other.