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The term hemothorax is nothing but the entry of pleural fluid and blood particularly into the pleural space. Causes of hemothorax include trauma, piercing, pulmonary embolism, ruptured aortic aneurism. Iatrogenic hemothorax happens because of a complication of cardio pulmonary surgery, placement of subclavian or jugular catheter or lung and pleural - necropsies. Lung contains two layers namely visceral pleura and parietal pleura. These layers of pleura divide to each other to maintain the lung from prevention of collapsing along with the expiration of air from the lungs. Pneumothorax occurs due to the entry of air into the lungs. Clinical aspects of hemothorax are casket pain, cold dyspnea, fever. Reddishness, tachycardia. Diagnosis is based on history, physical examination, ultra sound, casket X- ray, CT scan and MRI. Physioltherapy managenebt include ventilation, oxygenation and to re - inflate atelectatic lung areas. Differential diagnosis of blunt chest trauma is categorized into three types such as cardio vascular injuries, skeletal injuries and visceral injuries.