Abstract: Three People’s Principles of Sun Yat-sen formed in the 1911 Revolution cast the spirit of 1911 Revolution，also molded the spirit of Republic of China which means to follow the development trend，to highlight the times connotation and to show the advanced ideas. It was just this age spirit that not only floored the profounder historical value and in-depth implication of 1911 Revolution ，but also became the spiritual tie to inspire nationalist sentiment，to awaken national consciousness，to show national spirit to build a modern nation-state in an emergency national peril. Although the spirit of Republic of China has been cut and changed repeatedly， it always showed its spiritual power and value in emergency national peril and realized the progress in modern China .

Key words: the 1911 Revolution, the spirit of Republic of China, Three People’s Principles of Sun Yat-sen, Republic of China