The purpose of this research was to study the impact of effective risk management is used in the preparation of operation effect before entering the ASEAN Economic Community of business. SMEs retail group in Bangkok. SME s in the retail area of 330 people by using questionnaires. The statistical analysis of data, T-test F-test (ANOVA) correlation analysis regression. The results showed that the group most retail business affairs of the Thai people. A partnership business model effective risk management and performance than the individual business model SMEs retailers, with the registered capital. And the number of different staff efficiency overall risk management in identifying risk, risk assessment, risk management. The performance SMEs retail business, with the registered capital. Duration of operation and affect the operation of different customers, whether process within the organization. Learning and development. But the business SMEs retailers, with the difference does not affect the operation. Considering the relationships found effective risk management of business relationship and impact on performance. Therefore, SMEs assess the situation to control the risk that may occur both within and outside the organization. To prevent or reduce the effects that may occur to the operation