Abstract
We can consider community as a prism to explore Alasdair MacIntyre's Communitarianism, which is the reasoning problems of self, morality, and justice. In his theory of self, he advocates that the community should be prioritized over the individual, opposing Libertarianism; in moral theory, he asserts that the public interest must take precedence over individual rights, opposing the liberals' view that "rights take precedence over goods"; while in the theory of justice, he upholds the principle of fairness in the distribution of justice, against the principle of equality regarding to rights of liberalism. However, MacIntyre's own reasoning, morality, and justice also encountered certain insurmountable difficulties.