In response to last month's Britain’s Brexit negotiations, Donald Tusk the President of the European Council handed over a copy of the draft guidelines of Brexit to 27 EU member states and was quickly adopted at the EU special summit, which shows the unity of EU members other than the United Kingdom. In addition, on April 27 Angela Merkel said that the relationship between the United Kingdom and the EU must be further negotiated after the terms are clear, and the United Kingdom will no longer have its current relevant rights and interests. To Anbound research team, Brexit is not only difficult and unprofitable to the United Kingdom, but also serves as an example for other EU members who entertain any thought on leaving EU.