This thesis tends to figure out the influence of the real effective exchange rate on the trade balance between China and the USA, using time series data from 1993 to 2015. After passing the unit root test and cointegration test, I established the ECM model for the empirical work, and find out that the influence does exist, but the effect is the only minor. Moreover, the short-run effect corresponds to the pass-through period described in the J-Curve theory.