For the past fifty years, the SMEs founded by entrepreneurs are not only the base of the economic development in Taiwan, but also the main vigor source in the developing economic of Taiwan. Particularly, The service industry is Taiwan’s main developing industry in the future. In the start-up business’ activities, the identification of the new start-up business opportunity and the tendency of the entrepreneurship are the important factors to affect the success of the start-up. There are three purposes of this thesis：（1）to find the effective factors of organization in the organizational entrepreneurship and the result of start-up business;（2）to analyze the models of identifying the new opportunities and the relationship of the models and the performance of the business; and（3）to find if there is any relationship between the organizational entrepreneurship and the identification models of the new start-up business opportunity.
The subjects of this study focus on the entrepreneurs of service industries consulted by Youth Career Development Association. There are 321 effective samples, and the regression analysis used to test the hypothesis. The main result indicates that the higher the risks and the more proactive the company takes, the better the performance the businesses have. In addition, the study conducts 4 identification models of start-up business opportunities, and there are several important findings on this study：（1）the more the proactive the company have , the organization will more likely to use model one;（2）the more the proactive and innovation the company have, the organization would likely to use more model two. (3) the more the proactive, innovation, and risk-taking the company have, the organization would likely to use more model three. Otherwise, the higher the risk-taking the firms have, they would likely use model four. In short, the result shows that there is a significant relationship between the organizational entrepreneurship and the models of the identification of new opportunities.
Finally, this study implies that entrepreneurs should design proper organizational culture and institutional rules that increase their innovation, proactive abilities, risk-taking, and choose more rational model to find new opportunities so that can increase the satisfaction of the performance of the business. For the identification model of the new start-up business opportunity, entrepreneurs who focus on the services industry will take model 1,2,3 when they try to find the opportunities of start-up business. In addition, those models can be used overlapping by entrepreneurs whenever they would like to develop the new start-up business or find the business opportunities.