In carrying out on "the Public Security Informatization Project",we developed the data management platform. In this platform the core businesses of the seismic networks have been implemented,including the access and storage of the real-time stream waveform,the management of the networks/stations' basic information,the output of the conventional data products,output of the products for specific earthquakes,and the analysis of waveform quality. Through the GUI/API of the platform,the processing and service of the earthquake event waveform,the quality analysis of the seismic data,the construction of the fundamental database of the source parameters,have made great progress. The platform is characterized with business integration,functional practicability,resource sharing and advanced technology,which effectively improves the informatization level and plays a positive role in the modernization of the seismic networks.