Significance: Microgravity combustion research is essential for understanding fundamental combustion phenomena and advancing combustion theory. However, conducting experiments in orbit involves significant technical challenges and resource demands. The Combustion Science Rack (CSR) aboard the China Space Station (CSS) has been operational since October 2022. To further support combustion science research aboard CSS, consolidate critical scientific questions in microgravity combustion, and validate the in-orbit experiment feasibility, a ground-based research platform has been established at the space experiment center in Huairou District, Beijing. This platform replicates the combustion environment and apparatus dimensions of the in-orbit CSR. Equipped with high-precision diagnostic tools and versatile experimental modules, the platform enables researchers to validate in-orbit experiment feasibility, conduct ground-based validation tests, and generate baseline control data for CSS experiments. The paper highlights the platform's design, operational principles, and preliminary test results. Together, these demonstrate its ability to meet the diverse requirements of current and future microgravity combustion research projects. Progress: The platform consists of the experimental insert subsystem, the supporting facility subsystem, and the combustion diagnostic subsystem. Designed to match the experimental space and apparatus sizes of the in-orbit CSR, this ground-based platform takes full advantage of laboratory amenities, including gas supply, ventilation, power supply, and thermal control facilities. The platform comprises three subsystems: the experimental insert subsystem, the supporting facility subsystem, and the combustion diagnostic subsystem. The experimental insert subsystem supports a wide range of experiments with its gas, liquid, and solid combustion modules. The combustion diagnostic subsystem is equipped with high-precision measurement devices such as high-speed cameras, particle image velocimetry, and planar laser-induced fluorescence, enabling real-time measurements of flame morphology, flow velocity, and intermediate species distribution. Initial tests demonstrate that the platform can generate various types of gas flames, including premixed, diffusion, and partially premixed flames, by adjusting the fuel-to-oxidizer flow ratio. The liquid combustion module conducted suspension and ignition tests for single and multiple droplets, while the solid combustion module examined how planar, cylindrical, and linear materials combust under microgravity conditions. The system precision and reliability were validated by comparing diagnostic data with established data on flame oscillation. Additionally, the platform's modular design supports upgrades to both future software and hardware. Conclusions and Prospects: The ground-based research platform replicating on-orbit combustion environments plays a crucial role in supporting and complementing future combustion studies conducted aboard the space station. With its advanced experimental modules and diagnostic tools, the platform enables systematic and in-depth combustion experiments, advancing fundamental research in space combustion. Notably, the diagnostic system facilitates high-precision measurements across diverse combustion experiments. This ensures accurate analysis of flame structures, flow velocity fields, and chemical component distributions, providing critical ground-based validation and comparative data for addressing key scientific questions faced in space-based research. Overall, the platform is equipped with comprehensive facilities necessary for conducting combustion experiments. By supporting systematic experimentation, it helps optimize the design of space-based experiments, strengthening the cutting-edge and innovative aspects of space combustion studies. Furthermore, the extensive diagnostic resources and results from ground experiment results offer valuable data for in-orbit combustion experiments, driving the advancement of space combustion science theories and applied technologies.