Recently, Fed Chairman Powell's remarks on Trump's imposition of tariffs have attracted widespread attention, especially when he mentioned that the tariff range is far beyond expectations and may have a profound impact on the economy. This statement not only reflects Powell's concerns about the current economic situation, but also reveals the potential threat of tariff policies to inflation and economic growth. Powell pointed out that the tariff increase will lead to rising inflation and slowing economic growth, which is in stark contrast to what he previously believed to be "temporary" inflation effect. His speech shows that the Federal Reserve is at a crossroads of policy adjustments under the dual pressure of high unemployment and high inflation. Market expectations for the future direction of the Fed have become more complicated, especially in the context of increasing uncertainty in the Trump administration's trade policy. Powell stressed that it is not suitable for rushing to adjust monetary policy at present, but should adopt a wait-and-see attitude in order to better evaluate the long-term impact of tariffs on the economy. In the future, if tariffs continue to affect the economy, it may force the Fed to adopt more radical monetary policies to cope with rising inflationary pressures. Investors need to pay close attention to the Fed's follow-up measures and its impact on financial markets, especially in the cryptocurrency sector, where policy changes may lead to market volatility. Against this background, investors are advised to remain cautious and pay attention to macroeconomic indicators and policy trends in order to adjust their investment strategies in a timely manner.