Microbiota variety is site specific depending on its location in the body and this diversity can get together with human health. At the last decades, inflammation is a primary protective response that sometimes goes away and becomes a main cofactor in the pathogenesis of numerous chronic human diseases, including malignant tumor. As well, microbes have the potency power to influence tumor growth and progression through a wide forms of routes; including alteration of tumor microenvironment, prolonged activation of inflammation, induction of genotoxic restraints and metabolism. In this review, we will set a general overview of inflammation has suspected to provide a major role in the pathogenesis and development of cancer as an important object for advanced cancer biology.