In the field of M&S of Component, the component modeling and simulation environment KD-SmartSim based-on BOM specification has been used widely. The application composed of components in KD-SmartSim employs RTI to achieve parallelism, but its performance is inefficient. In this study, the deficiencies of KD-SmartSim were discussed, and a new parallelization structure for component which inherits the concept of BOM component modeling was presented. A parallel simulation engine for components in the form of SPMD was designed, which implements various services required by model computing. In the prototype system, the sequence and conservative time advancing were completed now. The experiment shows that the engine has all capacities which can support BOM component executing and can improve the performance of simulation system composed of components greatly.