Abstract: satellite of the China national geophysical field observation series of satellite missions, the China Seismo-Electromagnetic Satellite (CSES) was designed upon an optimized CAST2000 platform for a sun synchronous orbit. Onboard CSES, there are total eight types of scientific payloads including the Search-coil Magnetometer, Electric Field Detector, High Precision Magnetometer, GNSS Occupation Receiver, Plasma Analyzer, Langmuir Probe, Energetic Particle Detector Package, and a Three-band Transmitter to individually acquire the global electromagnetic field, electromagnetic waves, ionospheric plasma parameters as well as energetic particles. Up to now, CSES has been operating normally in orbit for 2 years. By using the various sensor data acquired by CSES, we have achieved scientific research in the areas of the global geomagnetic field modeling, space weather, earthquake event analysis, the Lithosphere-Atmosphere-Ionosphere coupling mechanism and so on.