The purpose of this study is the phonological changes through phonological therapy with the use of computers in cases of phonological disorders. We carried out a case study on four subjects (S1, S2, S3 and S4) with ages between 4:7 and 5:3 year old, male and female, with phonological disorders, that took part in this research. The subjects were submitted to the Phonological Evaluation of the Child, Repetitive-Articulator Test, Stomatognatic System Evaluation, Phoneme Discrimination Picture Test, Stimulability Test, and audiological evaluation. The subjects were organized in pairs according to the similarities of their phonological systems. One subject of each pair was treated with traditional phonological therapy and the other with a computer as the main therapeutic resource (experimental therapy). The evaluation data were analyzed, and after that, the results of the subjects submitted to the traditional therapy (S1 and S2), and the results of the subjects submitted to the experimental therapy (S2 and S3) were compared through the Fishers exact test, considering a statistical significance level of 5% (p<0.05). We verified that the improvements of the subjects S3 and S4 submitted to the experimental therapy was higher when compared to the subjects S1 and S2, submitted to the traditional therapy. In addition, the result was statistically significant. The results of this research showed that the use of the experimental therapy was positive when treating children with phonological disorders. However, there is a need for further studies in order to increase the sample to confirm the findings. Thus, the computer can be used as an instrument for the phonological therapy.