A better performance for service firms mainly depends on its effective implementation of the market orientation among its employees and its enhancement of their commitments to organization through continuous internal marketing programs. Such practice has interested traditional universities in managing their new business in continuing education when life-long learning is winning wide acceptance today, and thus has become the focus of this paper. Based on data collected from 261 valid respondents from 70 universities, we explore the mediated effects of internal marketing and organizational commitment on the relationship between market orientation and organizational performance by structural equation modeling (SEM), whose results show that organizational commitment alone serves as a complete mediator between market orientation and organizational performance. Moreover, internal marketing has a positive effect on organizational commitment.