A linear compensation method of a touch panel is utilized to a touch control computer system. According to the method, a compensation reference table, including reference temperatures and reference surface resistances at pre-determined reference points having known coordinates at the reference temperatures, is obtained at first. Then, a set of user calibration resistance at the pre-determined reference points is obtained through a user calibration process, so as to obtain ratios of the user calibration resistances to interpolation surface resistances as correction weights. Under different temperature, interpolation surface resistances corrected by utilizing the correction weight to derive the current correction surface resistances that are corrected and nearly identical to actual surface resistances. Therefore, relatively precise coordinates are obtained through resistance-coordinate conversion process.