The visual impact of a display of cultural property is affected by the illumination. The way to balance the visual effect, the conservation of cultural property and energy saving is essential to the design of a successful museum display. LED lamps, which substitute traditional artificial light sources, are within the green energy industries that have been vigorously developed and promoted in recent years. They are considered to be the “superstars” for the illumination of museum displays because of their many merits: UV-free, non-heating, low power consumption and long life, This article reviews the applicability of using LEDs as a light source ina museum display from the conservation perspective.