Connection: Both countries belong to the modern political party system, and both rely on political parties to achieve political rule. The source of China's political party system is the political party system founded by western Britain and America.

Difference: different in nature, socialist democracy and capitalist democracy. China is a multi-party cooperative political consultation system led by the Producers' Party of China, while the United States is a two-party system. China and other democratic parties are friendly and cooperative, while the United States competes with the Democratic Party and the Party. China is the ruling party, other democratic parties are participating parties, and the United States is the relationship between the ruling party and the opposition party.