This study aimed to investigate whether Taiwanese graduate students could efficiently correct English pronunciation problems after two-week training period by using computers to practice common English vowel problems and word stress. Following quantitative and qualitative analysis, the research resulted in the following observations: 1) The method of this study would bring more opportunity for practicing English pronunciation. 2) Students could be noticed the pronunciation errors which they did not pay attention to before. 3) Learners’ English pronunciation did appear to improve in two weeks. 4) The impact of training could transfer to the new words that is never learned and could persist for about one month.