With the support of the monitoring and forecasting department and the technical management group of underground fluid discipline of China Earthquake Administration, a comprehensive management system for basic data of underground fluid network was developed in this paper. The system has the functions of basic information quality inspection, geochemical background survey, water level inspection and calibration, assessment list and declaration, station change and stop observation, feedback on subject quality assessment, etc. For its applicability to underground fluid stations, provincial underground fluid networks center, and national underground fluid networks center, the system can provide technical support for data collection and filing, instrument operation and maintenance, data tracking and analysis, data anomaly verification, and product output services, thus laying a good foundation for monitoring, forecasting, and scientific research.