The core function of Enterprise Service Bus(ESB) is message transformation and routing. In order to overcome the inefficient and low reliability issues in the ESB which is caused by using static routing modes, this paper proposed a dynamic reliable model-DRRSR from the two aspects of modifying the path contents which stored in the routing table and how to re-locate service providers when they has problems, based on the analysis of the DRSR model and DRESR model. Then gives a detailed description of model’s function and describes the realization of several modules. At last, from the two aspects of theoretical and practical test, we compared and analyzed the model with the previous model from the two aspects of efficiency and reliability.