A 2×3 mixed design was conducted to collect the correct rates of / a /,/ o /,/ e /,/ i /,/ u /,/ ü / by repeating 18 Chinese words,in order to explore the effect of language time and audiovisual effect by comparing correct rates of Chinese vowel identification for preschool children with hearing impairment who accepted between under and above 15-month language training.The findings indicate the interaction between language training time and audiovisual condition was significant,the main effect of language training time was not significant,but...