In recent years, there has been intense international debate over the RMB exchange rate. Many voices argue that the renminbi should open up and allow the market to determine its value; however, there are numerous scholars who believe that the renminbi should maintain the status quo and follow the reform of the evolution of the overall political and economic situation before gradually opening. However, in early 2014, the renminbi experienced devaluation, rare in recent years, coupled with the beginning of Chinese economic data recession, and the market began to question whether the renminbi would move toward a trend of depreciation. This study, based on the phenomenon of early 2014 after the devaluation of the RMB interval fluctuations caused by an open discussion, according to its domestic and international political and economic exploring changes, tries to apply a model derived through economic theory and determine whether this wave of devaluation is a short-term or long-term trend.