Following the rapid advances of the human microbiome, the importance of micro-organisms especially bacteria is gradually recognized. The interactions among bacteria and their host are particulary important for understanding the mechanism of microbe-relate diseases. This article mainly introduces an explorative study to extract the relations between bacteria and diseases based on biomedical text mining. We have constructed a Microbe-Disease Knowledge Graph (MDKG) through integrating multi-source heterogeneous data from Wikipedia text and other r...