Protective device for preventing electric arc burn

The invention relates to the technical field of face protection, in particular to an arc burn prevention protection device which comprises a mounting unit, and the mounting unit comprises a head sleeve ring, mounting boxes arranged on the two sides of the head sleeve ring, control assemblies arranged in the mounting boxes and a power supply unit. The protection unit comprises two supporting rods and a protection assembly arranged between the two supporting rods; the two supporting rods are located in the two mounting boxes correspondingly and connected with the control assembly. And a through groove for the supporting rod to penetrate through is formed in the mounting box. According to the protection device for preventing electric arc burn, the protection area of the face is increased through a second extension plate and a first extension plate of the protection assembly, the control assembly drives the supporting rod and the protection assembly to rotate, the protection device is located on the top of the he