Cerebrovascular accident (CVA) or stroke is a condition where the blood flow to the brain is impaired, which can be caused by a blockage (ischemic stroke) or rupture of blood vessels (hemorrhagic stroke), resulting in cell death in some brain areas. Stroke can cause significant impairment in motoric, cognitive, and coordination skills of limbs and muscles. One of the non-invasive stimuli that can be applied in post-stroke patient rehabilitation is Transcranial Direct Current Stimulation (TDCS), aiming to improve the frequency spectrum towards normal. This study aimed to find the Quantitative Electroenchepalograph (QEEG) parameters that characterize the improvement of post-stroke patients' brain signals after the administration of TDCS. QEEG parameters included absolute power, relative power, ratio power Delta Theta Alpha Beta (DTAB), Delta Alpha (DA), and the percentage of each frequency wave band in the brain. EEG signals were recorded for 5 minutes before and after TDCS administration from 23 subjects, consisted of 12 post-stroke patients and 11 healthy subjects as a control. The result showed that there were significant differences in QEEG parameters before and after TDCS administration to both post-stroke patients and healthy subjects. The alpha frequency was dominant for healthy subjects, with the average of 25.67% before stimulus then increased by 1.91% after the stimulus. For post-stroke patients, delta frequency before the stimulus was dominant, with an average percentage of 43.03% then decreased by 10.44% after the stimulus. These results show that with TDCS, there is a change in the EEG wave pattern in post-stroke patients, which followed the profile pattern of healthy subjects. © 2021 Author(s).