The invention relates to a light transmittance adjustable anti-dazzling lamp which comprises a lamp holder, a lamp source and a lamp shade; the lamp holder is plate-shaped, and is internally provided with a power supply and a control circuit board; a switch is arranged on one side of the plate-shaped lamp holder; the lamp source is arranged on the other side of the lamp holder; the lamp shade is made of transparent materials, and seals the lamp source; convex lenses are densely distributed on the light emitting surface of the lamp shade; and a light transmission adjustment system is arranged on the light incidence surface of the lamp shade.