Cyanobacteria (blue green growth) are a different gathering of Gram-negative prokaryotes that perform oxygenic photosynthesis. Their photosynthetic action changed the old Earth's climate from an oxygenic to oxygenic conditions, which is considered to have happened somewhere in the range of 2.4 and 2.1 billion years ago. Cyanobacteria developed to turn into the antiquated beginning of the chloroplast in plants and eukaryotic green growth by means of essential endosymbiosis, which is considered to have happened 1.5 billion years ago, albeit an agreement has not yet been gone after the solidarity of the beginning of chloroplast genes notwithstanding their application in the investigation of photosynthesis, Cyanobacteria likewise address a possible stage for the creation of biomaterial/biofuel like alcohols, diols, unsaturated fats, and natural acids by metabolic engineering. Cyanobacteria are available in practically all territories on Earth and broadly affect the worldwide biological systems through carbon and nitrogen obsession and through the creation of different auxiliary metabolites. They can live in outrageous conditions, for example, oligotrophic oceans, deserts, glaciers, polar regions, and blistering springs. Diverse Cyanobacteria strains have been separated from different conditions and kept in culture assortments around the world.