Abstract:The main objectives of the Mengcheng National Geophysical Observatory are to conduct various geophysical observations and researches, including seismic, gravity, strain, electromagnetic and other means, and also perform geospace environment observations and researches, mainly focusing on the middle and upper atmosphere and ionosphere regions. The integrated geophysical observations from the Earth's interior to the space is essential for understanding the structure, formation, and evolution of the Earth itself and the geospace environment, and also the generation mechanisms, early warning, and forecasting of various natural disasters. By using observation data from geophysical arrays of different scales, we have obtained the multi-scale structures, deformation, and characteristics of seismogenic structures of the Tanlu-Dabie tectonic belt. From the observation data of the geospace environment, we have revealed the high temporal and spatial resolution phenomena and the related mechanisms within the middle and upper atmosphere and ionosphere. These researches provide important bases for regional earthquake monitoring, earthquake hazard investigation, geospace environment monitoring, and space weather study.