Abstract: The majority rule as a basic principle of democratic politics, it embodies that the citizens are their own master. It not only respects the disagreements in political environment, but also respects every individual in decision-making process. When using the majority rule, in order to prevent it from becoming the tool of certain political interests, as populism does which replace the real people by fake majority, we should follow three basic preconditions: non-antagonistic principle; unknown identity principle; and the same decisive power principle. However, even if we follow theses principles described above, the majority rule inevitably has its defects. Therefore, using the traditional Confucian thought of "harmony without uniformity" as the test standard is conducive to optimizing the majority rule, ensuring the harmonious coexistence of the majority and the minority, and promoting the development of democratic politics in China.