In this paper,about 150TB waveform data of permanent stations in China Earthquake Networks stored by China Seismological Network Center from 2008 to 2021 are archived,selected and sorted. The data availability and completeness are also investigated and counted. After the establishment of data file index database,a waveform data service platform conforming to the international standard Web service interface is built,which can continuously provide data services for 7×24 hours,realize the function that users can automatically obtain customized waveform data by writing application programs,and provide support for the development and application of new data-driven technologies such as artificial intelligence in earthquake monitoring.