1, the national crisis deepened and social contradictions intensified.

2. The "New Deal" went bankrupt in the late Qing Dynasty, and the appearance of the "Royal Cabinet" completely disappointed the constitutionalists.

3. Class foundation and backbone.

4. Ideological basis: the widespread spread of bourgeois revolutionary ideas and the Three People's Principles put forward by Sun Yat-sen. ..

Extended data

The Revolution of 1911 was aimed at opposing absolute monarchy and establishing a bourgeois republic. This is a bourgeois-democratic revolution in a complete sense. As pointed out: "China's anti-imperialist and anti-feudal bourgeois democratic revolution, formally speaking, began with Sun Yat-sen", and the leaders of the Revolution of 1911 realized that to save the country, it is necessary to revolution, to save the country and to survive, it is necessary to overthrow the feudal imperial power.

With the abolition of the feudal monarchy, various ugly systems attached to the feudal monarchy have also been swept away, such as hereditary system, eunuch system, knighthood system and so on. The voices of national equality, civil rights and freedom, and happiness of people's livelihood echoed in China.

The unprecedented democratic atmosphere and the wave of competing for industries have formed a vibrant situation. The concept of democracy has been deeply rooted in people's hearts, and a democratic concept of "those who dare to have an imperial system will be attacked by the world" has been formed in China. Because of this, when Yuan Shikai and Zhang Xun successively restored the monarchy, they were strongly condemned by public opinion and resolutely resisted by the people.