Abstract: Background: Interstitial lung disease is an umbrella term used for a group of diseases that causes scaring, swelling, infection, Inflammation, Fibrosis and difficulty in breathing. HRCT is Gold standard modality to evaluate ILDS in RA patients because there are different appearances shows on CT in lungs that are used to evaluate the severity and extend of disease in lungs. Objective: To emphasize the use of High Resolution Computed Tomography in patients of arthritis having Lung parenchymal diseases. Methodology: An observation study of RA-ILD patients surveyed from May to November 2020.The 60 patients where ruled out with Arthritis in our Clinical Centre out of which 22 patients were taken to investigate that appearances like Ground glass, Honey comb, Enlarged lymph nodes, Bronchiectasis, Pleural effusion in the patients of Rheumatoid Arthritis. Result: In this study 22 patients were taken out of which Arthritis was present in 18 Patient and we evaluated the HRCT findings like Ground glass opacities, Honey comb appearance, lymph nodes, Bronchiectasis, Pleural effusion. Frequencies of different (ILDs) HRCT appearances were obtained. These outcomes recommend a positive relationship between the RA infection action and Lung aggravation in RA-ILD. Conclusion: In conclusion lung parenchymal changes due to Rheumatoid arthritis are more common in male than female. HRCT demonstrated sensitivity in the detection of anomalies, but clinically silent as well as not being diagnosed in simple radiography. It concludes that HRCT images are beneficial in diagnosing interstitial lung disease for rheumatoid arthritis patients.