Abstract: The pulse contour parameter K is a very important physiological index, It has been found that K does not have a unique value at each pressure and depends only on the pulse contour, In this paper the relationship between contour parameter of human body and physiological parameters is discussed in detail. It is pointed out that for young healthy persons the K is below 0.35-0.4, but for those suffering from hypertension or peripheral arteriosclerosis it is above 0.4-0.5. The results of the study have found that the pulse contour parameter K is very important in the assessment of cardiovascular diseases.