Genome editing is widely used in genome engineering research and site-specific nuclease technologies and CRISPR/Cas system focus on single gene editing. Owing to the huge size of genome, there are some limitations on the applications of these technologies. Multiplex Automated Genome Engineering(MAGE)is a new, fast and efficient genome editing technology, which can operate multiple genes simultaneously, and be used in knockout and replacement of Escherichia coli genes. This review illustrates the recent adva...