2. The United States has not yet emerged from the economic recession on Wall Street, and the unemployment rate remains high. In addition, a series of policies promised by the Obama administration during the election campaign have not yet been realized, and a series of health care bills have been forcibly implemented. In addition, the political situation in the United States is not optimistic in a short time. In addition, the general election is just around the corner, and a series of important bills will have to wait until after the general election, so the economic situation in the United States is still difficult to improve, making the dollar and US debt not optimistic.

3. The earthquake in Japan and the floods in Thailand caused the Japanese and Thai governments to invest a lot of money in disaster relief, which led to an increase in demand and economic development. In contrast, under the financial stimulus, the yen and Japan's solid industrial base will be well recognized in a short time. Although Japanese national debt is risky, it has not reached the level of European and American countries on the whole. Japanese people's savings are also in the forefront of the world, and early consumption is not as serious as that of European and American countries. Therefore, the currencies of Asian countries, especially the Japanese yen, are favored after the euro and the US dollar.

This is why the yen has been appreciating for a long time.

After the Greek government forcibly passed a series of fiscal bills and finally accepted the harsh conditions put forward by European countries, the European economic crisis was temporarily lifted, the prospect of the American election became clear, and the introduction of campaign slogans and policies could also foresee the policies and measures of the next government, so that the economies of European and American countries would not continue to deteriorate on the surface. So the success rate of speculation will be relatively high for some time?

In 5.20 12, the Japanese government should prepare to increase the existing consumption tax from 5% to 10%, and propose to eventually increase it to 17%. Moreover, it is necessary to raise the existing old-age insurance from 65 to 70, which leads to Japanese nationals' reluctance to spend, and internal discord and contradiction within the ruling party, which makes speculators unwilling to continue taking risks on the yen.

Non-experts, for reference only.