Abstract: Aiming at the difficulty in understanding the control principle and adjustment process of the double closed-loop ratio control, a hardware-in-the-loop simulation platform has been developed. The platform is composed of process flow analysis, double closed-loop ratio control scheme configuration, flow chart configuration, proportional-integral-derivative (PID) parameter tuning, and simulation operation modules. On this platform, the process analysis, sensor and actuator selection, control scheme design and automatic control loop operation of the double closed-loop ratio control system can be conducted. The results show that the platform developed comprehensively covers the theoretical knowledge of double closed loop control and has good interactivity, and the experimental process is clear and highly operable. The platform illustrates the deep integration of theoretical knowledge and practical problems, which is conducive to cultivating students’ problem-solving ability.