<p>Based on the attribute-based models, this study used both self-report surveys and eye-tracking technology to uncover the process mechanism by which ego depletion influences intertemporal choice. The results showed that activation of ego depletion would affect inter-dimensional differences comparison, which mediated the effect of ego depletion on intertemporal choice. Compared to participants in the control condition, those in the depletion condition perceived a greater difference in the delay than outcome dimensions between the two options, thus making decisions based on the delay dimensions and choosing immediate rewards. Furthermore, eye-tracking evidence showed that the relative gaze time mediated the effect. In contrast to the depletion condition, participants in the control condition had a greater proportion of gaze time of the outcome dimension relative to the delay dimension to the total gaze time. This study contributes further evidence supporting the attribute-based models’ explanation of intertemporal choice.</p>