The study empirically investigated the impact of change in exchange rate on Foreign trade of Pakistan for the period 1993 to 2017.ML condition states that exchange rate devaluation improves trade balance of a country.The econometric methods utilized in the analysis include Johansen cointegration technique and vector error correction model（VECM）approach.The variables used in study include trade balance（TB）,exchange rate（EXR）,export（EX）and import（IM）.Stationarity test was conducted and found stationarity among the variables after first differencing.The estimation of the cointegration test showed evidence of long run relationship among the variables.The test results of VECM models states that exports of Pakistan are influenced by the exchange rate in the long-term as well as short-term;however,imports are only controlled by the exchange rate in the long-term.Similarly,the study through the application of VECM indicate that exchange rate（EXR）has positive and insignificant impact on exports（EX）and Negative on Imports（IM）,the study recommends that government may reconsider its exchange rate devaluation position and the results shows that in long-terms exchange rate devaluation may lead to increase in exports and show negative results with imports for Pakistan so government is advised to put more efforts to increase its export which would results in to significant improvement in the trade balance of the country in the long run,and hence,discourage excessive volume of importation observed in the economy.