Abstract: Objective this study on the difference in systemic vascular resistance (SVR) and related factors between Han and Hui residents were explored and analyzed. Methods 2795 Hans and 1886 Huis from Yin Chuan and He Lan areas of Ning Xia province were detected with Bioz.com digital non-invasive hemodynamic monitor from the US, a lot of indicators were determined ,including systemic vascular resistance (SVR), systemic vascular resistance index(SVRI), body mass index(BMI), diastolic blood pressure(DBP),systolic blood pressure(SBP), cardiac output(CO), cardiac output index(CI), heart rate(HR), mean arterial pressure(MAP).at the same time ,the relevant factors were analyzed. Results (1)Hui aged 16～18 and 30～39 year old male SVR were significantly higher than the corresponding ages of Han males( P<0.05 ).(2) Hui aged 16～18 year old male SVRI were significantly higher than the corresponding ages of Han males( P<0.05 ).Multiple linear regression: the strength of the impact of SVR difference between the Hui and Han population is followed by MAP, CI, HR, SBP and DBP; the order of indicators of the contribution on the SVRI was consistent with the SVR. Conclusion the higher SVR/SVRI are possibly related to genetic and lifestyle of Hui , compared with that of Han residents.

Key words: Key words: systemtic vascular resistance, cardiac output, cardiac index, Han population, Hui population