The fact that the Federal Reserve has kept interest rates unchanged this time could very likely lead to a decline in the cryptocurrency market economy. The Federal Reserve has maintained high interest rates for a long time now. High interest rates also mean a low borrowing rate and high lending rates. People will gradually tend to conservative returns. As for the legality and illegality of cryptocurrencies, along with the high risks involved, we will gradually convert the cryptocurrencies obtained in the crypto market into US dollars. Meanwhile, President Trump cannot interfere with the Federal Reserve's interest rates, nor can he promote the short-term prosperity of cryptocurrencies. The future will require more profound layouts and adjustments.