Electrical burns can be categorized as electrical contact burns, arc burns and flash burns. Arc burns are treated in the same way as thermal burns. Electrical contact burns for the human body in direct contact with the current or the human body into the high-voltage electric field (beyond the safety distance) resulting in burns. Electrical contact burns burn area is not large, but the damage can be deep into the muscles, blood vessels, nerves, bones or internal organs; there is the entrance and exit of the current, the entrance of the damage is more serious than the exit. Often due to limb flexion and spasm caused by the current short circuit, the formation of multiple current outlet, the wound is jumping. Muscle is in sandwich necrosis, high amputation rate, the current can directly damage the brain, spinal cord, heart, lungs, liver, kidneys, gastrointestinal tract, eye crystals and the corresponding symptoms. Cataract is the characteristic complication, unilateral or bilateral, mild cataract can be absorbed, most need surgery.