In the present paper, we will discuss the pulmonary blood flow in Lung. Pandey and Upadhyay have considered the blood flow of two phase, one of which is that of red blood cells and other is plasma. They have also used Herschel- Bulkley non- Newtonian model in purpose of bio fluid mechanical set-up .We have known that as the velocity of blood flow decrease successively because of the fact that arterioles, venules and veins are far enough from the heart. We have collected clinical data in case of COPD for Hematocrit v/s Blood pressure. The graphical presentation for particular parametric value in much closed to the clinical observation. The overall presentation is in tensorial form and solution technique adapted is analytical as well as numerical.