He was the pioneer of the idea of constitutional democracy, including party government, responsibility cabinet and the separati.

The relation between constitutional democracy and economic development is a new issue worth theoretical explore and positive research.

The Great Charter of Liberties born in 1215, is the developing production of constitutional democracy of England.

Binary Separation of the State and Society Is the Basis of Constitutional Democracy;

Democratic Constitutionalism and Harmonious Socialist Society;

The Further Exploration of QiCheng Draft Constitution ——Important Achievements of the Democratic Constitutionalism Movement during the Anti-japanese War Period;

It is exactly the period of anti-Japanese war that the movement of democratic constitutionalism developed fastest in China modern history.

It is a fundamental,principle of the modern democratic constitutional government to respect and ensure human rights.

The root cause of Soviet Union s drastic changes is its idea of value conflicted with constitutionalism and democracy.

The confilct between pursuit of democratic constitution and centralized autocracy is very obvious in SUN Yat-sen s political ideology in his later years.

Therefore,disclosing the close relationship between due process of law and democratic constitutionalism,and scientifically establishing the normalization and perfected regulation of due process become necessary for guaranteeing human rights an.

This paper probes into the democratic constitution thought and its political practice of Song Jiao ren in early republic of China through establishing a constitution,parliamentary politics and local autonomy,so as to analyze and evaluate the thought and period of political elite of Chinese bourgeois in early of 20th century from new angle.