This paper is mainly to find the relationship between Bitcoin and its mainly use of the country’s exchange rate, because Bitcoin in many countries have the legitimacy problems, also is a kind virtual currency which become more popular than before, data start from August 2010 to January 2015, explain variables are included in NT dollars, EURO, Japanese yen, GBP and Canadian dollar, the explanatory variable is NT dollar exchanged into US dollars. The method of research is to use the changes in the exchange rate of the currency and the Bitcoin currency used by the above countries to analyze the relationship between the currency and the currency. In the end of this paper, we find there only Canadian dollar, GBP and EURO have direct effect in 10% confidence interval.