Biofartilizers is a substance which contains living microorganisms which helps in enriching the fertility of the soil. Bio fertilizers are applied to plant surfaces, seeds, soil, colonizes the rhizosphere, as a result increased in supply of nutrients to the host. Bio-fertilizers helps in nitrogen fixation, solubilising phosphorus, and stimulating plant. Bio-fertilizers reduce the use of chemical fertilizers and pesticides. The microorganisms in bio-fertilizers enhance the soils natural nutrient cycle. Therefore, bio fertilizers are enriching soil fertility and provide organic materials through microorganism and their by products.