Brexit dominated the political agenda of the UK in 2019. Due to the deep-going divergences on ideas and/or interests between the different parties in the UK and within both the Conservative Party and the Labor Party，the deal reached between the UK and the EU had been vetoed，leading to the delays of the date of the UK’s withdrawal from the EU. In order to make breakthroughs from the impasse，an early election was held in December 12 2019，which is the first general election held in winter since 1923. The Conservatives won their biggest majority since the 1980s，signaling the further right turn of the UK’s party politics as well as a return to the traditional bipartisan system. The UK de jure left the EU on January 31 2020. However，it is not the end of the Brexit process. The UK and EU will launch a series negotiations on their future relations with the free trade agreement at the center. Due to a set of complicated reasons，there exists a number of uncertainties as to the final outcome of the negotiations. No matter what kind of agreements that the two sides can conclude，Brexit will be a significant loss to the EU. While at the same time，Brexit will bring unknown impacts to the UK’s economy.