Abstract: To address issues such as the diverse types of earthquake disaster prevention and mitigation data in Beijing, scattered storage, and complex interconnections between various business systems, this paper adopts a Spring Boot + MyBatis architecture to design and implement a metadata-based automated data service gateway.The entire data service gateway is built on a metadata foundation, comprising three major modules: data collection, data processing, and data services. By classifying, querying, and invoking the metadata of Beijing's earthquake prevention and disaster reduction operations, it standardizes the collection and processing of seismic data from diverse sources and formats, achieving dynamic matching and scientific invocation of target data sources—specifically "physical models—data resources." Integrated into the Beijing Earthquake Information Service Platform, the gateway provides standardized data querying and invocation services externally via HTTP protocols, enabling dynamic adaptation to varying service requirements. Additionally, the gateway incorporates a comprehensive state monitoring and circuit breaker mechanism for seismic disaster prevention and mitigation data, effectively ensuring secure operation and retrieval of all data types. The establishment of this metadata-based Beijing Earthquake Disaster Prevention and Mitigation Data Service Gateway will significantly enhance data service capabilities, reduce interface development costs, and promote cross-departmental data sharing.