The human body contains a large number of normal microorganism, whose composition is complex and diverse and it plays a variety of physiological roles in the body, such as participating in the body's metabolism and regulating immune functions and so on. When the organism is affected by internal and/or external factors, the balance of microbiome may be broken, resulting in the imbalance of microbiome, which will induce a series of diseases. A growing number of studies have suggested that dysbacteriosis is associated with the occurrence and development of cancer, metabolic diseases and infectiou...