Externalities of Network Finance and Related Refletions on Policy

The externalities exits in the network financial activities, include direct externalities and indirect externalities. The indirect externalities of financial activities belong to pecuniary externalities, not affecting the social welfare; but direct pecuniary externalities are technique externalities, it causes the network financial market the growth lack from the demand aspect. Therefore, solution of the problem is the government should act a coordinated role to intervene financial market.