Developing on opponent model, recognizing intentions and plans are necessary for effective communication in MAS. BDI is an effective way to describe mental state, which can be used to develop a generic opponent mental state model. As current research on the opponent mode focus on implications from unilateral action, they neither express simultaneous intentions and other relations, nor provide support to making decisions making at real time. A generic opponent agent model based on BDI developed in this paper improves the research done by AnandS.Rao and Milind Tamde.