Abstract
In this research, firstly, the future transition of Japanese economy is explained and it is pointed out that there is little possibility that Japanese yen becomes strong from now on. Furthermore, the feature of a foreign exchange (FX) is introduced, and it is shown that an investor can perform global investment freely by FX. Moreover, comparison with a stock market and FX is performed, all-the-year-round and for 24 hours a weekday, FX trading is possible, and it is explained that FX is a trading system which can respond more quickly to an event risk. Finally, Japanese people should recognize the risk of persisting in property of Japanese yen strongly, and it is claimed that FX can become a effective measure to future Japanese yen's fall and continuation of domestic low interest rate for property protection .
