Flipped classroom provides the new ideas and ways for the innovation of university pedagogical mode. Nowadays instructors may apply this new approach to liberal arts majors in university class in order to make up for the problems of low instructional effects in traditional teaching method. From the subjective and objective perspectives, this research analyzes experimentally the similarities and differences of instructional effects among traditional teaching method, semi-flipped classroom approach and full flipped classroom approach in electronic business course in university. The results show that two kinds of flipped classroom approaches can produce better instructional effects relative to traditional teaching method. Moreover, semi-flipped classroom approach is more suitable for liberal arts specialties in university compared to full flipped classroom approach. Lastly, flipped classroom approach only achieves its instructional effects after a period of time.