The difficulty of pronunciation of English learners Iranian EFL. Studies using computer assisted instruction in pronunciation. 30 samples were divided into two groups of 15 were among the first to practice voting ordinary and the second group used a computer program to help teach pronunciation. The study found that The group taught the ordinary voting You can vote and 65 percent of those taught using computer-assisted instruction. Voting can be concluded that 85 per cent of teaching using computer assisted instruction in phonetic pronunciation of the students can get better and take less time to practice pronunciation.