Focusing on the application of rainwater storage facilities in sponge city construction, this paper systematically sorts out the classification of rainwater storage facilities from multiple perspectives. Based on practical investigation and analysis, different application scenarios and processes of rainwater storage facilities have been proposed. The focus is on optimizing the configuration and operation scheduling of rainwater storage facilities, identifying four key application links:determining design standards, optimizing facility configuration, calculating storage capacity, and managing operation scheduling. The methods for calculating design precipitation, optimizing facility configuration, calculating storage capacity, and the current status of facility operation and scheduling management are summarized. Future research should focus on the spatial variation characteristics and differences of rainfall, as well as the impact of rainfall events on the control objectives of rainwater runoff. Develop a technology platform that integrates rainwater and flood models with optimization algorithms, and enables nested applications. This platform supports the full process simulation, online evaluation, and optimization of facility configuration, and explores the water regulation and efficiency improvement mechanism of cascade seepage, multi-level regulation, and linkage operation between rainwater storage facilities.