ERP is widely used and cried up in deve loped countries due to its comprehen sive and systemic manage-ment characteristics.It is also under development and application in China to certain extend.The paper,fro m the point of view of systems engineering,analyzes and studies the remarkabl e changes ERP brings about from e -commerce.Furthermore,the strateg ies and directions of integration of ERP and E -commerce are presented and discussed in the paper.All these pro vide the valuable suggestions on the ERP' s practice in e -commerce activ-ities.