中文摘要：

本文从小额信贷机构和借款人的综合角度,研究小额信贷机构（MFI）运行机制的选择对借款人还款行为的影响。研究发现：基于个人发放的贷款方式、聚焦妇女和非金融服务、较低的单个借款人贷款额度,都会降低违约率;所有权形式方面,相对于信用社来说,非银行金融机构（NBFI）和非政府组织（NGO）都可以降低违约率,并且NGO降低的幅度大于NBFI;MFI经营时间越长,违约率反而越高。

英文摘要：

From the perspectives of micro-finance institution （MFI） and borrower, the author of the paper analyzes the influence of the operation mechanism choice of MFI on borrower＇s repayment behavior. It＇s found that the method of granting individual loan, focus on women and non-finance service, and the low loan amount of single borrower reduce the default rate; as to the effect of ownership, both the non-bank financial institution （NBFI） and the non-governmental organization （NGO）, compared with the credit cooperative, can reduce default rate, and the NBFI can reduce more than the NGO; the longer the MFI operates, the higher the default rate is.