Abstract: Pathogenic Escherichia coli is one of the most common pathogenic microorganisms. This kind of pathogen spreads through a variety of ways and its infection has caused many food safety accidents in the world. Though the emergence of its antibacterial resistance has raised concern,it also facilitates institutions and researchers to design new bacteriostatic methods. As direct pathogenic factor,E. coli risk virulence factor has drawn much attention by researchers. Also the technology of detecting E. colideveloped rapidly too. Compared to traditional methods,advanced detection techniques for pathogens are fast,specific and accurate in determination of the pathogen. Based on the research status in domestic and abroad,this article introduces the research progress on assessments of E. coli virulence and techniques of detecting E. coli from several aspects such as the situation of E. coli's contamination,infection route,symptoms,antibacterial resistance and its risk virulence factors,as well as detection techniques.

Key words: pathogenic E.coli, current situation analysis, detection techniques