一、具备相当的规模一个证券市场的规模必须大到让那些希望在该市场筹资的企业能够正常地筹资,而不受市场规模的过分制约。二、行为主体具备“经济人”的特征证券市场上基本的行为主体是投资者,融资者,投资银行、注册会计师、估值师等中 First, have a considerable size A securities market must be so large that those who wish to raise funds in the market can raise funds normally without being over-constrained by the size of the market. Second, the main behavior with the “economic man” characteristics The securities market, the basic behavior of the main investors, financiers, investment banks, certified public accountants, Valuer and so on