Abstract: Armament Rapid Extended Manufacturing（REM） definition and theory are introduced according to the requirement of armament rapid batch variable production.Aiming at some core issue of REM,Manufacturing Execution System（MES） supporting REM is put forward. And then illustrates the key technology of MES supporting REM,such as the technology of scheduling and dynamitic rescheduling supporting REM,the whole lifecycle materiel management and application integration on resources platform;the technique of automatic navigation and drive in manufacturing on workflow.Lastly,the function model and the framework of MES are discussed.Running results in aerospace enterprises in China show that the system is feasible,reconfigurable,and can meet the individual requirements of many enterprises.