The Research on Investor Protection and the Regulatory Efficiency of Securities Based on the Law and Finance Theory;

From the aspects of Western micro-economics and social welfare economics, the connotation of insurance development refers to the improvement of market entities quality, enhancement of market efficiency, improvement of the quality of transactions and improvement of regulatory efficiency.

Study on Financial Supervision Efficiency Based on the Cost-Benefit Analysis

The globalization of economy and universal operation trend of financial institution impel each country to reformits supervisory system and method so as to increase supervision efficiency.

With the entry of the WTO, in order to improve the financial supervision efficiency and the ability of the management of the risk, we should take action from consummating financial supervision fundament and innovation of supervision.

The paper firstly sets up various variables for regulation efficiency and mainly studies the regulation efficiency of independent director and institutional investor that are two new participants in the corporate governance of Chinese capital market.

But the insurance regulation polices in China are emulating methods and experience of developed countries to a large degree, lack of close association with local economics, culture and mentality, which lead high indirect cost, especially unobvious opportunity cost, and low regulation efficiency.

By using the evolutionary game theory,the paper analyzes the supervisory cooperation between the PBC and the other three regulatory bodies and the efficiency of this cooperation.