The prevalence of chronic obstructive pulmonary disease among patients with cardio-vascular diseases is higher than in general population. At the same time the one of problems of internal medicine is a timely diagnostics of chronic obstructive pulmonary disease.The aim of the work was the study of prevalence of chronic obstructive pulmonary disease among patients with cardio-vascular diseases, especially arterial hypertension and coronary heart disease.Materials and methods. The retrospective analysis of statistical cards of patients, who were on stationary treatment at therapeutic departments, was carried out to estimate the prevalence of combination of chronic obstructive pulmonary disease with arterial hypertension. The target examination of 136 patients was realized for revelation of chronic obstructive pulmonary disease. All patients were interrogated by the original modified questionnaire of assessment of short breath by medical research council (mMRC), test for assessment of chronic obstructive pulmonary disease (CAT) and underwent spirography with bronchodilatation test.Results. It was established, that 10,2 % of patients had the combination of chronic obstructive pulmonary disease with arterial hypertension. Among persons, who were on treatment as to the stable coronary heart disease and had not obstructive disease of respiratory organs in anamnesis, in 26,4 % the chronic obstructive pulmonary disease was diagnosed for the first time.