According to the actual requirements of chinese aircraft manufacturing enterprises, the formation of MBOM is analyzed. It is pointed out that MBOM stems from EBOM, and AO and FO are basic characteristic of MBOM. Based on this point, the concept that MBOM and its related management technology are built based on manufacture process is defined. And the seamless chain of the integration-oriented system between CAPP and ERP can be realized based on MBOM.