Tracing the Mercantilism,the Classicalism,the Keynesianism and the New Liberalism,also with the view of Information Economics and Institutional Economics,this paper demonstrates the relationship between the State Interference and the Laissez-faire is interdependent but not substitutive.

On the other hand,the theory of laissez-faire has occupied an important place in the history of Western economic theories.

Under the guidance of Laissez-Faire,the material wealth of western counties increases very fast,but it cannot help to increase the welfare of the majority of the people in the west.

Laissez Faire and Economic Security: A Comparison of Southeast Asian Financial Crisis and American Subprime Mortgage Crisis

Liberalism should not be simply treated as laissez faire and anarchism.

The new state interference thought took the place of noninterference thought and became the mainstream of American political thought in late of the nineteenth century and early of the twentieth century, which l.