It is well known that "The Single European Market 1992" is very much related to demestic investors and economv in the future. The paper applied the portfolio balance model to analyze the domestic interest rate and exchange rate under the influence of the Single European Market. The results show that the European Market integration will raise the level of domestic interest rate and will depreciate the value of domestic currency. With re- spect to the Single European Market, therefore, domestic balance of trade will be grown up, but capital inflow will be increased. It suggests that the policy-maker should make a trade-off between the level of interest rate and value of domes- tic currency.