With the promoting of economic and financial globalization, the capital account openness has become a critical component of promoting economic development and strengthening foreign exchange for country. But the capital account openness tends to risks and challenges for country's finance disorder, exchange rates and foreign trade. This paper point out that the capital account openness might have caused some problems, such as short-term macroeconomic overheating, excessive influx of speculative capital, etc. Then this paper put forward some countermeasures, such as keeping continuous macroeconomic policy, implementing a more flexible exchange rate policy.