The main environment problems in preservation of Mogao Grottoes are fracture of cave rock, wall-painting, mural fading, erosion from blown sand and sand deposition.

• 莫高窟保护面临的主要环境问题有洞窟围岩裂隙，洞窟壁画酥碱，壁画退色，风沙对壁画、塑像的磨蚀以及积沙对洞窟的掩埋等。