Abstract
Geomagnetic observation is an important approach to explore the variations of the Earth’s magnetic field. However, factors such as observation environment, observation facilities and observation equipment may affect the quality of observation data. This paper deeply analyzes the factors that may affect the quality of data in China’s current geomagnetic observations, and discusses in detail the strategies we have implemented in this field. These strategies include the selection of observation sites, the protection and monitoring of the observation environment, the maintenance and improvement of observation facilities, the maintenance and monitoring of observation equipment, the analysis and processing of interference information, and effective measures in quality control.