Entrepreneurship is a way of thinking and acting to seize and pursue an opportunity without concern for current resources or capabilities. Many studies, such as Stevenson (1983) and Timmons (1999), have analyzed the nature of entrepreneurship and the mechanism of entrepreneurial process. The domain of entrepreneurship has been expanded from commercial entrepreneurship to social entrepreneurship, and entrepreneurial approaches have been successfully utilized to solve social problems and create social values. Some of social enterprises have developed “sustainable” business models, but the general conditions for “sustainability” of business models for social entrepreneurship have not been fully explored. In this context, we aim to identify the driving forces for social entrepreneurship and find the sustainability conditions for social entrepreneurship.