To increase the spread of traditional lending business, SME (Small and medium enterprises) credit has become the important business for banks to enhance their profitability. Nevertheless, the relationship between financial institutions and the SMEs is always pursuit its balance with contradictory. SME operators are complain about the difficultly to acquire loans from banks, while bankers consider that the operation risk from these SME operators is high. One of the reasons is relate to the financing characteristic and operation nature of SME. Secondly, bankers will concern about the financing decision making because of the risk consideration.The risk assessment of SME that the domestic bank used is still follow 5P's framework, including personal factor, purpose factor, payment factor, protection factor, and perspective factor. Each of factors has different aspect and affect. The study will collect reference resources and utilize risk assessment for SME. As a basis of those fundamental works, the study will make some discussion with experts in depth interviews. According to the information from the previous interviews, the study will compile the information into the Delphi method to conduct quantitative questionnaire survey. This survey will conclude 25 factors that evaluate from expert's perspective toward credit risk of SMEs qualitative and quantitative indicators. Therefore, by using AHP (Analytic Hierarchy Process) method, this study can find the importance and priority form the above target information. Refer to previous relevant dissertation related to SME credit risk assessment, whether on the financial or the non- financial considerations, protection factor might mention but not an important factor to judge. However, the study concluded that protection factor representing the three factors in the top five factors of highest relative weight. The conclusion means that domestic banks are more cautious in risk management and business development after experienced three storms from 2000 to 2009. The selection order has changed on SME credit risk assessment, and the protection factor has become the main factor which affected bankers to SMEs risk assessment.