In this paper,with 2007 annual reports of Shanghai listed companies as samples,sample companies\' voluntary disclosure of information is measured,and through multiple regression analysis the influence of the 7 factors reflected in company qualifications on the voluntary disclosure of information is tested.

By means of comparative research this paper discusses the legislation of corporation capital system and offers suggestions in view of the corporation s capital formation system, the lowest norm of registered capital, the constitution of corporation capital (way of offering capital), and the obligation for the false corporation registered capital.

Corporation capital system is a core of the corporation law, and a foundation of perfecting other systems of the corporation law.

Issues of State-owned Investment Company and the Reform Orientation to Policy Investment Company;

Research on Legal System of Internal Control of Investment Company in U.S.A;

But the existing laws and regulations of our country have a great deal of restrictions on the investment body of company, including the discrimination of investment body between the domestic company and the corporation with foreign capitals, and the limitations of reasonable application because of the absence of definition of the investment company and the holding company, etc.

The paper firstly analyzes the relevant theories of corporate financing and then develops a theoretical model, showing that the reason for the equity preference is that listed companies can use of the government s system for state - owned enterprise reform in order to .