In microbiology, flora refers to the collective bacteria and other microorganisms in an ecosystem. Bacterial flora is a community of bacteria that exists on or in the body and possesses a unique environmental association with the host. microflora includes a wide variety microorganisms, and the interactions between microbes and host creates a mutualistic relationship that both entities gets advantage from humans. Biologists believe that bacterial flora may play some role in disorders such as multiple sclerosis. Additionally, the study of flora can have industrial benefits such as dietary supplements like probiotics. The living microorganisms in probiotics are believed to have positive effects on health and have been utilized in studies regarding gastrointestinal diseases and allergies. In this session we will be discussing about the microflora and in related topics like Ecology, Exogenous bacteria, Gut flora, Human flora.