An anti-static device for plastic cutting is disclosed, and comprises a U-shaped plate, an anti-static mechanism is arranged on the left side of the U-shaped plate, the anti-static mechanism comprisesa transverse cylinder, a first circular ring, a compression spring, a second circular ring, a short rod, a protruding block, a ball, a lantern ring, a rolling wheel and a connecting line, and the transverse cylinder is located on the surface of the left side surface of the U-shaped plate. According to the anti-static device for plastic cutting, through cooperation between the U-shaped plate and the anti-static mechanism, the outer wall of the lantern ring is attached to a plastic cutting saw blade, then the plastic cutting saw blade is used for cutting a plastic base material, and static electricity generated in the cutting process can be transmitted to a grounding device through the lantern ring, the ball, the protruding block and the connecting wire, electrostatic accumulation between the plastic cutting saw blade and the plastic base material can be prevented, dust suction and electric shock are avoided, the problem of disordered transmission in the cutting device due to static electricity can be prevented, and meanwhile, operators are prevented from being in electrostatic radiation for a long time.