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.

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.

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.

However, owing to the provisions of the Company Law regarding the number, registered capital and the joint liability of shareholders for investors to establish one-person companies, though these provisions are conducive to maintaining the safety of transactions, they seriously constraint the freedom of investment and influence people’s initiative to set up one-persons companies.

Admission of Foreign Investment and Investment Liberalization——Discussion on the Developing countries countermeasures of investment liberalization;

While trying to promote international investment liberalization and to protect the interests of international investors, the international legislation of investment in the future shall gua.

With deeply development of economical globalization in recent years, investment liberalization , as an important component of economic globalization, has become a trend of the times.