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Background: Spinal cord injury (SCI) is the injury of the spinal cord from the foramen magnum to the cauda equina which occurs as a result of compulsion, incision or contusion which is a life threatening condition that carries a high risk of morbidity and mortality. The Incidence of SCI varies from 9.2 to 56.1 per million. In the Indian setup, Approx. 20,000 new cases of SCI are added every year. Spinal cord injury (SCI) patients are at increased risk of chronic respiratory symptoms as Respiratory muscle paralysis both restricts maximum inflation of the lungs and impair the ability to cough. Patients with tetraplegia have decreased chest wall and lung compliance, rib cage stiffness with paradoxical chest wall movements. Material and method: A Pilot study was carried out on 04 Traumatic Spinal cord injury patients. The purpose of the study was To find out effectiveness of respiratory PNF on pulmonary functions (FVC & FEV1) & Chest Expansion in patients with spinal cord injury. The pulmonary Functions (FVC & FEV1) and chest expansion was measured by using Spirometer (PFT machine) and inch tape. The data was analyzed using standard statistical software. Result: In this study After 4 weeks of Intervention there was Significant Improvement in Pulmonary Functions ( Pre Mean of FEV1 & FVC 0.99 L & 1.03L and Post Mean of FEV1 & FVC was 1.25 L & 1.35L respectively) and Chest Expansion (Pre Mean was 1.15 cm and Post Mean was 1.62 cm at Xiphoid Process Level). Conclusion: This Study concluded that Respiratory PNF increases Pulmonary Functions and chest expansion in Patients with Spinal Cord Injury after 4 weeks of Intervention. Keywords: Spinal Cord Injury, Forced Expiratory Volume (FEV1), Forced vital Capacity, Peak expiratory flow rate, Respiratory Proprioceptive Neuromuscular Facilitation Technique.