Aiming at the demonstration and evaluation characteristics of systematic reliability,maintainability and supportability (RMS) requirements on complex equipment systems,through the research on RMS requirements, capability analysis, architecture analysis,simulation and evaluation of equipment system, the procedures and techniques for demonstrating and evaluating the RMS requirements of complex equipment systems are proposed. The idea of software platform architecture based on the above technology is given, which provides ideas and methods for carrying out the demonstration and evaluation of the RMS requirements of the complex equipment system that emphasizes systemization and actualization.