To improve the automation level of national seismic cataloging and the accuracy of earthquake parameter determination, we have optimized the data processing workflow of the national network cataloging and developed a software for importing phase data from national stations. This software integrates the SeisComP platform system with the existing national network cataloging operations. In this paper, we introduce the design concept and main functions of the phase data import software. Using the analysis and processing of the MS 6.2 earthquake in Jishishan, Gansu on December 18, 2023 as an example, we demonstrate the combination of national station phase data and offline event waveforms. By utilizing the SeisComP system"s capabilities such as earthquake event detection, automated earthquake parameter determination, visual human-machine interaction, and data quality monitoring, we enhance the scientific and reliable nature of national seismic cataloging.