the small and medium- sized enterprises' essence is feeble and unstable,often is at the inferiority position with the big enterprises'steep R&D competition,needs to have government's special support. To the small and mediumsized enterprise financing support support, the developed country had the relative more perfect pollicy support policies and measures ,but compares with the developed country also has the big disparity, thus has the necessity further perfect financing support policy,gives a small and medium- sized enterprise more powerful su...