Green/climate technology has been emphasized as a growth engine that can boost the global economy via environmentally friendly products. Recently, SMEs in Korea have been recognized as a critical actor in the globalization of green/climate technologies. However, there has been no survey and few studies on the satisfaction level of the support for the overseas expansion of SMEs in the green/climate technology field. Therefore, this study aims to support a policy for the establishment of SMEs' green/climate technology by investigating and analyzing expert opinions on SMEs. Through a literature survey, support policies were classified into four types, and then according to the types, satisfaction factors and obstacle factors for overseas expansion were derived and analyzed. In the results, the SMEs overall showed low levels of awareness and satisfaction and were found to be struggling due to all obstructive factors. In addition, the most important success factor for overseas expansion was found to be the policy related to funding support. Thus, it is necessary to improve the accessibility, advertisement, and support strategies of support policies, and in particular, appropriate budget allocation should be made available by considering the characteristics of companies.