Abstract: Cellular breakdown in the lungs is an exceptionally deadly infection and causes the demise of 1.76 million individuals consistently which is higher than different sorts of cancers. A lung cancer diagnosis is a serious concern for everyone because mostly lung cancer is diagnosed at a later stage that is not curable. Recently, work is being done on the detection of noninvasive breath biomarker to diagnose lung cancer. Carbon based sensors displayed high affectability and selectivity towards the lung cancer related volatile organic compounds that are exhaled out by lung cancer patients. Carbon based sensors are quick, delicate, specific, and give at spot results. Our review focuses on the detection of lung cancer related volatile organic compounds through Carbon nanotubes and graphene-based sensors.Keywords: Carbon Nanotubes, Graphene Based Sensors, Detection of Lung Cancer