The political party system is an important component of modern democratic politics. What kind of political party system to adopt in a country is determined by the nature, national conditions and social development of that given country. The diversity of political party systems in different countries reflects the diversity of human civilizations.政党制度是现代民主政治的重要组成部分。一个国家实行什么样的政党制度，由该国国情、国家性质和社会发展状况所决定。各国政党制度的不同体现了人类文明发展的多样性。