First, as a result of the pre- and post-surveys of the experimental group that experienced depression, the anti-stress effect was found in the experimental group that watched natural landscape image on screen. Second, the effect of psychological detachment improvement was found in the experimental group that watched natural landscape image on screen. Third, the effect of optimism enhancement was found in the experimental group that watched natural landscape image on screen. Lastly, improvement in psychological happiness was found in the experimental group that watched natural landscape image on screen.