In order to solve the financing difficulties of small and medium-sized enterprises( SMEs),a financial support model named the Credit Guarantee System is widely adopted by many countries( Liu Zhirong,2009). Presently,nearly 48% of all countries have established mature SME credit guarantee systems which share three characteristics. First,the government should make financing contributions and undertake certain responsibilities after determining the financing guarantee as a policy guarantee. Second,government departments should assist SMEs in o...