The invention provides a software radar real-time dynamic updating system. The software radar real-time dynamic updating system comprises a radar component management center, a radar event manager, acomponent loader, a radar component service caller and a radar component database. According to the method for analyzing the dependency relationship of the radar components in the radar system, the safety and the stability of the software radar system are improved. The invention further provides a decoupling method between the radar assemblies, the radar assemblies operate independently as services after registration is completed, coupling generated by direct communication between the assemblies is avoided, decoupling between the radar assemblies is achieved, and the radar assemblies do not influence each other any more. According to the system, radar component updating is achieved through C + +, and compared with java type loading, the real-time performance is better; updating can be operated under different platforms supporting a dynamic link library or a shared library, and the advantage of uninterrupted updating is achieved; when the functions of the registered radar assemblies arecalled, the registered radar assemblies operate independently in a service mode, and coupling between the radar assemblies is reduced.