In response to the issues of functional coupling and low performance in traditional radar digital simulation platforms, an innovative approach has been proposed by integrating the concepts of object-oriented programming and component reuse. This approach introduces a component-based radar simulation architecture. By abstracting the various functions of the radar digital simulation system into independent components and implementing loose coupling communication through a signal-slot mechanism, the components are made mutually independent, thereby enhancing the reusability among them. Simulation verification has demonstrated that this component-based radar digital simulation platform operates accurately, displays normally, and possesses excellent adaptability and scalability. It is capable of meeting diverse simulation requirements and offers a new solution for radar system development.