Global Initiative for Chronic Obstructive Lung Disease (GOLD) research on chronic obstructive pulmonary condition (COPD) characterizes it as a prevalent, preventable, and curable illness with persistent respiratory symptoms and airflow limitation. airway blockage resulting in dyspnoea and air trapping when exercising airflow restriction can be attributed to smoking, ambient tobacco smoke exposure, and the patient's TB history COPD airflow restriction is largely caused by airway tightness, chronic bronchitis, or emphysema. Repeated inhalation of hazardous particles induces chronic inflammatory immune cell infiltration, tissue repair, and airway remodeling, resulting in a 4-to 40-fold increase in airway resistance and bronchiolar constriction. 20% of small airways are bronchi, with the rest being either bronchioles or alveolar ductal gaps. Flow restriction includes alveolar wall disintegration and alveolar support. The modifications worsen the rapid FEV1 fall and contribute to the airway obstruction seen in COPD. COPD, small airway disease (SAD), has been extensively studied. Inflammation, fibrosis, and destruction of bronchioles are all indications of this illness. mixed pulmonary fibrosis and emphysema (CPFE). In fact, fibrosis appears to be involved in the obstruction of small airways.RAGE participates in several intracellular processes by binding to several ligands. RAGE ligand interactions trigger downstream signaling pathways that have been associated with COPD and other disorders. Thus, inhibitors of RAGE and its signaling pathways also have been found to play a function in other disorders, which suggests that they might be used to treat COPD. There are currently no established biomarkers to diagnose COPD. COPD patients are shown to have altered RAGE and some of its ligands. Despite a lack of agreement on how smoking affects sRAGE levels, greater study is needed to discover whether or not this biomarker is stable. It was discovered that among the North Han Chinese,-429T > C is associated with COPD. COPD vulnerability is furthermore associated with the genetics of RAGE. To get a better diagnosis, population-based studies are needed. Finally, RAGE, AGE-RAGE, and sRAGE all impact COPD, and RAGE may be employed as a biomarker for diagnosis and management of COPD patients if more study supports this hypothesis.