Today, market observers have noticed the Fear and Greed Index has significantly decreased to 20 points, suggesting that market participants' emotions have reached an extreme state, namely extreme fear. This index evaluates based on six core indicators aiming to provide a comprehensive perspective on the current market environment's uncertainty. In the calculation, market volatility contributes 25%, reflecting the instability degree of asset prices; trading volume accounts for 25%, revealing the intensity of investors' buying and selling activities; social media popularity measures 15% in terms of public attention towards market dynamics; market surveys contribute 15% providing professional analysts' forecasts about future trends; Bitcoin's proportion in the market contributes 10%, reflecting its influence as a primary cryptocurrency; finally, Google hot words analysis adds 10% through search data reflecting the concentration of market hot topics. As a whole, these factors work together to help investors and analysts understand the changes in current market sentiment, thereby making more informed investment decisions.