At 95 patients with essential arterial hypertension features of structural and functional remodeling of left ventricular and humeral artery depending on a level parathyroid hormone in blood are studied. It is shown that while increasing of plasma parathyroid hormone level frequency and expressiveness of left ventricular and humeral artery remodeling increases whereas diastolic function and endothelium-dependent vasodilatation considerably decrease. Subclinical primary hyperparathyroidism in patients with essential arterial hypertension is detected in 22.1% of cases.