The relaxed currency environment in the world which has lasted for 10 years has changed since last year, and the intention of tightening monetary policy in the United States, China, Europe and Australia is clearer than ever. Anbound research team believes that the specific time points of national policy changes depend on a number of factors, especially in the United States. The factors that affect the pace and the scale of the US interest rate increase are related to several economic indicators and the FOMC personnel changes, and also Trump's economic policy. However, even if the Federal Reserve is increasing interest rates, in the short-term one cannot be certain that the world is moving to a tightening era. Yet, the global tightening policy has become a clearer trend, which will give the international financial market more challenges.