Abstract: Objective To investigate blood pressure levels,the prevalence of hyper-tension andthe influencing factors of adolescents of Han,Zhuang and Yao minorities in Guilin,and to provide references for effectively preventing hypertension.Methods A total of 22 356 students who attended the college entrance examination in Gulin were required to receive physical examination,and the blood pressure levels,prevalence of hypertension and the influencing factors of the adolescents from the three ethnic group were compared.Results SBP of the boys and the girls in urban areas,suburban areas and the countryside were (116.7± 10.0),(114.6± 11.6),(113.7±11.2) and (105.1± 9.3),(106.3-±11.0),(106.9-±10.5) mmHg,respectively,and DBP were (70.8±6.8),(71.7±8.2),(71.3±8.1) and (66.5±5.6),(68.2-±7.8),(68.0±7.4) mmHg,respectively.The blood pressure levels of boys were higher than those of girls and the blood pressure levels of the students in suburban areas were higher than those of the students in urban areas and the countryside(P<0.05).The blood pressure levels of Yao adolescents were higher and prevalence of hypertensionwas 36.4%.The mean value of SBP and DBP was (110.3± 12.5) mmHg and (70.6±8.6) mmHg.The blood pressure levels of Han adolescent were lower and prevalence of hypertension was 16.4%(P<0.05).The obese group (42.8%) >overweight group (24.5%) >normal weight group (19.1%) (P<0.05) were diagnosed with hypertension.Conclusion Ethnic minorities,living environment and obesity are closely related to hypertension rates.The key to prevent hypertension is controlling overweight and obesity of the teenagers.