Democracy in the Three People's Principles is a political revolution, and its content is to establish the Republic of China, that is, to overthrow the feudal monarchy and establish a bourgeois country. Because democracy solves the problem of seizing and establishing political power, whether it is expelling nationalism, restoring China's equal land rights or people's life, its solution is based on the establishment of bourgeois political power. Nationalism itself paves the way for the bourgeoisie and the country to establish democracy, and people's livelihood also establishes a good social ruling foundation for the bourgeoisie and people's livelihood, so democracy is the core of the Three People's Principles. In the class struggle, the struggle between the ruling class and the ruled class mainly revolves around the state power. Because of its essence and function, state power is the fundamental problem of revolution and the central goal that all classes always strive for.