Objective To study the relationship of high-sensitivity C-reactive protein (hs-CRP),homocysteine (Hcy) and blood pressure variability in elderly patients with essential hypertension.Methods As the total coefficient of variation of 24-hour systolic blood pressure variability(BPsVC),the patients with essential hypertension were divided into two groups:the high-BPsVC group(n =72 cases) and the low-BPsVC group(n =48 cases).The hs-CRP and Hcy in serum in patients were detected.Results The hs-CRP were (2.52 ± 0.78) mg/L in the high-BPsVC group and (1.59 ± 0.61) mg/L in the low-BPsVC group.There was a significant difference (t =0.2766,P ＜ 0.05).The Hcy were(15.6 ±6.2) μmol/L in the high-BPsVC group and(13.7 ± 5.9) μmol/L in the low-BPsVC group.There was a significant difference(t =0.3742,P ＜ 0.05).Condusion There was a close relationship between hsCRP,Hcy and blood pressure variability in elderly patients with essential hypertension.