In order to solve complications from time, space and environment of certain type ballistic missile during simulating training relied on real weapon equipment, a design framework of simulating training system based on HLA/RTI is proposed. Put forward the total design scheme after requirement analysis and function design. Taking the user interface is consistent with real equipments, and the object model developing Tool HModeling and distributed simulation engine as integrated development environment (IDE), establish distributing simulation training system. The practice result shows that the system can meet all-weather and full-process test training requirement, and provides technical support of new weapon equipment quickly turned to battle effectiveness.