Organic light-emitting display device includes:Pixel is located at the intersection region of data line and scan line, and each pixel includes Organic Light Emitting Diode;Scanner driver is configured to supply scanning signal to scan line;Data driver is configured to driving data line, wherein, in each channel, data driver includes:Supply unit including digital analog converter, is configured to generate data-signal using the second data being externally supplied in drive cycle;And deterioration portion, it is configured in sense period utilize the deterioration information of digital analog converter measurement Organic Light Emitting Diode.