The study aims at understanding the overall linguistic ability of ATT, which is a new treatment for aphasic patients. The study conducted speech therapy by utilizing ATT and existing treatment(CILT) and attempted to verify and discuss their effect. First, applying the standardized test tool K-WAB after ATT mediation statistically significantly increased(p<.05) the K-WAB aphasia index scores(17.54±7.09), compared to before the mediation. Also, each of the K-WAB subtests(spontaneous speech(7.66±2.23), auditory verbal comprehension(5.99±1.46), repetition(6.02±1.8), naming(4.92±1.71)) showed a statistically significant increase(p<.05) in all areas. Second, K-WAB revealed that the existing treatment of CILT also statistically significantly increased the K-WAB aphasia index scores(6.97±4.48), compared to before the mediation. Also, each of the K-WAB subtests(spontaneous speech(7.66±2.23), auditory verbal comprehension(5.99±1.46),repetition(6.02±1.8), naming(4.92±1.71)) observed an improvement in all areas, although only spontaneous speech, auditory verbal comprehension, and naming showed a statistically significant improvement.(p<.05). Third, when the aphasia index and subtest(spontaneous speech(p=.006), auditory verbal comprehension(p=.138), repetition, and naming) scores obtained through K-WAB from the existing CILT and ATT treatments were compared, the aphasia index, repetition, and naming of ATT displayed statistically significant increase(p<.05) than the existing treatment.