On September 26th, Germany held federal parliamentary elections. What attracts people's attention is the abnormal result of this election : before the election, it is difficult to predict who will win, but the result is not unexpected. The left-wing Social Democratic Party won less than 2 percentage points over its main opponent, the coalition party. By gaining the upper hand priority of negotiating with the Green Party and the Liberal Democratic Party elected to form a cabinet. According to German election rules, if the social democratic party can reach a joint ruling agreement with other parties, the new German government will be established in the form of "three party co-governance" for the first time.