中文摘要：

受自由现金流的限制，中小企业需要外部融资来实现良性运营，供应商信用担保贷款是一种有效手段．考虑银行下侧风险控制的担保贷款模型，根据供应链购销过程中的订货量和批发价参数决策，评价供应链内部无风险资本转移过程．通过建立供应商担保费率、风险担保比率设计和银行利率组合模型，确定贷款担保系统的最优决策．研究结果表明：在具有贷款可获得性的资金约束供应链中，存在最优订货量与批发价的组合，且供应商销售收入存在最值；在担保贷款过程中，存在最优风险分担比例，通过设计合理的风险控制模型，可提高零售商资金水平，达到供应链的协同．

英文摘要：

Limited by the free cash flow, small and medium enterprises （SMEs） need external financing to achieve positive operating, therefore the core business credit guarantee loan is an effective means. A guarantee loan model under the down- risk-averse bank is constructed. The order quantity and wholesale price parameters decisions are used to evaluate the supply chain risk-free capital transfer process. By considering the guarantee fee rate and risk guarantee ratio design, as well as bank interest rate portfolio model, the optimal decision of the loan guarantee system is determined. The results show that： the funds constrained supply chain with loan availability has a combination of the optimal order quantity and the wholesale price, and vendor sales exist most value; there is an optimal risk sharing ratio during the guarantee loan process, and by designing the rational risk control model, SMEs can get funds, reaching the collaboration of the supply chain.