This paper explores the impact of rising global temperature on the melting of ice floes and ice sheets in the Arctic Ocean, Greenland and Antarctic. This paper notes that the current understanding of the impact of climate change on Arctic, Greenland and Antarctic ice floes and ice sheets may be significantly underestimated. This article presents evidence from three aspects. The first is the rate of global temperature rise after the end of the Last Glacial Maximum (LGM), which is now 10 times faster than after the end of the LGM. This also means that the current rate of sea level rise will also be likely to be 10 times faster than the rate of sea level rise at that time. The second piece of evidence is the analysis and fitting of curves from the available observation data, and many of the polynomial formulas that fit the curves show that the magnitude of sea level rise due to global climate change is accelerating. Some results suggest that global sea levels are likely to rise to around 10 meters by about 2050. The third piece of evidence is the very simple model of the impact of rising global temperature on Arctic Greenland and Antarctic ice floes and ice sheets. The model's estimates also suggest that global sea level will rise by about 7 meters by about 2050 due to the dissolution of the Antarctic and Greenland ice sheets. In any case, these evidences suggest that the magnitude of sea level rise in the coming decades will be enormous, and this will certainly affect the development of human society. Therefore, this article calls on countries around the world to take proactive measures to respond to this rapid sea level rise as soon as possible. These responses may include, but are not limited to, large-scale population migrations, the construction of coastal dams, and more. Given the drawn-up to rapid global sea level rise, especially in countries like China and the United States, coastal dam construction should begin planning and pre-construction work now. When looking at the magnitude of sea level rise in the future, we consider it important to reach a rate of rise of 1 centimeter per year, which means that the rate of sea level rise will be unprecedented after that.