Abstract: In the late of Qing dynasty and the early of Republic of China, the reform of constitutional government is social consensus. Qing government regarded the constitutional government as a tool to maintain the autocratic monarchy. LIANG Qi-chao’s thoughts of constitutional government supported the civil rights and were against the autocratic monarchy, but he compromised of the reality to advocate the enlightened autocratic. SUN Yat-sen’s thoughts of constitutional government supported the civil rights and advocated a constitutional republic, which conformed to the inner values of constitutional government. The success of the revolution of 1911 was relevant of the Development of China’s thoughts of constitutional government.