Brexit is a term that describes the exit of Britain from the European Union. Brexit has significant impacts on many states, including China and the EU countries. Researches show that the UK exit from the EU may make it grow more by 2050. China is focused on promoting the RMB to be an international currency. The promotion of RMB to become an international currency has many benefits to the country. Thus, the RMB internationalization may be affected by Brexit both positively and negatively. This is because China had chosen Britain to be its internationalization hub. Therefore, this paper will look at the advantages and disadvantages of Britain's exit from the EU on the internationalization of the RMB.