Abstract: The inhibitory activities of essential oil products like XTRACTTM and RO on Escherichia coli were studied, and the effects of them on raising-use microencapsulation of lactic acid bacteria were studied. The microencapsulation of lactic acid bacteria and Escherichia coli were cultivated under adaptive cultivating conditions, and then differences between the group of adding essential oil and the contrast group were measured so as to study the effects of essential oil products on raising-use microencapsulation of lactic acid bacteria and the inhibitory activities against Escherichia coli. Results showed that essential oil products within certain added concentration could be used together with the raising-use microencapsulation of lactic acid bacteria, furthermore essential oil products had good inhibitory activities against Escherichia coll.