The worldwide governments, particularly current one in China, always encourage their undergraduate to establish student start-up ventures in local incubators around the universities. In the most cases, the student start-ups lack core technology, while only a minimal proportion of start-ups are based on high technology inventions or services. In this paper, the category of student high-tech start-ups were studied in the light of a preliminary survey. The activities of undergraduate entrepreneurs were also investigated by using the general SWOT analysis method. The key factors for these high-tech start-ups were derived, including decision-making efficiency of the entrepreneurial team, the rationality and efficiency of space-time opportunities in the market, the construction of entrepreneurial team, the legal provisions for relevant high-tech products, the technical innovation and security, and financial guarantee. Based on the modelling analysis, a recommended roadmap for high-tech start-ups were proposed in accordance with current undergraduate entrepreneurs in Chinese colleges.