Abstract: In today s world against the financial crisis,the RMB s appreciation is a double-edged sword.Correct understanding of the advantages and disadvantages of the Renminbi appreciation is not only our government s consideration when responding to crises,but every one s concerns who cares about China s economic development of the moment.Based on the background and reasons for the appreciation of Renminbi,the paper analyses the both positive and negative impacts on China s economy brought about by Reminbi apprecia...