目前，国家地磁台网中心汇集了全台网数字化观测资料，并在全国地震行业网内实现了数据准实时共享，本文主要从技术管理、常规产出和探索研究3个方面，介绍国家地磁台网中心目前相对完善并提供Web服务的数据应用情况。技术管理方面的应用主要是为了监控台网数据质量，常规产出则是产出各种地磁报告，而探索研究方面的应用则是尝试利用各种方法研究地磁变化。

China geomagnetic digital data recordings are collected to the Geomagnetic Network of China (GNC), and shared in China earthquake industry network. Main data applications in the GNC are introduced here on technical management, regular producing and research producing. These applications were produced on relatively convenient methods and offering web service via the website of the GNC. The technical management application is to monitor the data quality, the regular producing offers geomagnetic report and research producing is trying to use some methods to research geomagnetic variations.