| Summary: | 碩士 === 國立中興大學 === 財政學研究所 === 87 === After the collapse of Bretton Woods system, exchange rate among most countries around the world became to float freely. At the same time, many schools discussing foreign exchange rate arose one after another.
Every school arose for different background, but international financial situation changes rapidly, some past theories could not afford explanations to fit the performance of current foreign exchange rate. So I chose as many effective variables which affected current exchange rate as possible, and investigated the relations among these variables and exchange rate NT dollar against US dollar.
I found that the most effective variables in those past theories didn''t have the same influence on exchange rate as in the past. Regarding the new variables I chose-Central Bank interference, capital inflow, and stock price index, their influential period was too short, so their effects were not evident.
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