Aim of present study was to apply a mathematical model of two phase human blood flow in pulmonary Venules, keeping in view the nature of pulmonary blood circulation during lung cancer. We have applied Herschel Bulkley model in Bio- fluid mechanical setup and we have used with respect to clinical data in case of Lung Cancer for hemoglobin versus blood pressure. In this examination overall presentation was in tensorial form and the solution method adopted was analytical as well as numerical. The role of hematocrit is clear in the determination of blood pressure drop in case of pulmonary disease Lung Cancer.