Abstract: The geophysical fl uids, such as the atmosphere, the ocean, the land-water and the ice-sheet etc. are constantly changing on the Earth’s surface, under the condition of global climate change. These geophysical fl uid changes cause the variations of the Earth’s rotation and the Earth’s gravity fi eld. Using the space-geodesy techniques, we can acquire high precision variation data of the Earth’s rotation and the Earth’s gravity fi eld, and then invert the geophysical fl uid changes in the Earth’s surface to explore the relationship between either the Earth’s rotation or the Earth’s gravity fi elds and the global climate change. Otherwise, the Earth’s rotation variations are correlated with the climate oscillation, such as El Niño, North Atlantic Oscillation, and also correlated with the long-term change of geophysical fl uid changes on the Earth’s surface. Thus, observing variation data from the Earth’s rotation and the Earth’s gravity fi elds, will help us have a deeper understanding of the global climate change.