Abstract: Researchers aimed to investigate the effect of high intensity transdirect stimulation in (2 mA-20 min) as a helper technique in improvement of working memory and aphasia quotient in patients with non-fluent aphasia disorder. To achieve this goal, researchers evaluate the efficacy of transcranial direct current stimulation over dorsolateral prefrontal cortex of the brain upon non-fluent aphasia recovery, included 20 chronic and stroke-induced aphasia patients who each underwent 10 sessions of anodal transcranial direct current stimulation (2 mA-20 min) and 10 sessions of sham transcranial direct current stimulation (20 min) treatment. It was revealed that after transcranial direct current stimulation with 2 mA intensity and 10 sessions working memory and aphasia quotient (according to lesion location but not genders) improves significantly in non-fluent aphasia patients as compared to sham transcranial direct current stimulation. So, treatment with more sessions of anodal transcranial direct current stimulation with high intensity (2 mA-20 min) enhance working memory and functional recovery in non-fluent aphasia patients after stroke. Here, the lesion location but not gender factor plays a main role in its outcomes.