In order to be placed on a desk board stably, the base of the conventional desk lamp is usually larger and occupies a larger area of the desk board, so that the conventional desk lamp is inconvenient to use; when a kid uses the conventional desk lamp, the kid likely pushes the conventional desk lamp down to the ground to cause an accident. Besides, more often than not, the conventional desk lamp is an incandescent lamp or an energy-saving lamp; the incandescent lamp consumes much energy, so that the incandescent lamp cannot save energy; the energy-saving lamp saves energy relatively but can cause a glitter phenomenon which is liable to cause visual fatigue, and if growing teenagers often use energy-saving lamps, the eyes of the growing teenagers are prone to injury. The invention discloses a sucking-disk-type myopia-prevention desk lamp. The sucking-disk-type myopia-prevention desk lamp mainly adopts an LED lamp as a light source, not only can save energy but also can relieve visual fatigue, does little harm to eyes, is particularly suitable for the growing teenagers, and has the characteristics of energy conservation, environmental friendliness and safety in use; meanwhile, the bottom of the sucking-disk-type myopia-prevention desk lamp is designed as a magnetic sucking-disk-type base, so that the sucking-disk-type myopia-prevention desk lamp can be absorbed onto a desk board or a metal material conveniently, has a good absorbing effect, is less susceptible to falling down, occupies a very small area, and is convenient to use.