In paper, we developed Supply Chain Simulator on considering reverse logistics. This Simulator allows to model SCM networks and to support main decision of supply chain management ？ inventory policy, distribution policy. The simulator include reverse logistics situation in this paper which was not considered pervious research. New concept idea of the simulator like flow, transfer with node, arc which is elements of network model was proposed. We verified this simulator through actual. This simulator is developed by Object ？Oriented Language. The simulator has next-event time advance clock.