The invention discloses a transparent flame-retardant antistatic ABS material, and a preparation method and an application thereof. The transparent flame-retardant antistatic ABS material comprises 39-80 parts by weight of a transparent ABS resin, 10-25 parts by weight of an environmentally-friendly brominated flame retardant, 0-1 part by weight of an antimony flame retardation synergist, 1-5 parts by weight of a phosphorus flame retardation synergist and 5-25 parts by weight of a flexibilizer, wherein the environmentally-friendly brominated flame retardant is tri(tri-bromophenyl)cyanurate. The invention also provides the preparation method of the transparent flame-retardant antistatic ABS material, and the application of the ABS material. The ABS material still has a high transparency, a light transmittance reaching above 40%, good mechanical properties, a good weather ability, and a surface resistivity of 10<10>omega or less after the flame retardation modification.