Electrocution is known as electric shock in clinical medicine, and there are many factors that affect the degree of injury from electric shock, such as voltage level, current strength, resistance, route of electrocution, contact time, and type of current. First aid for electric shock injuries can be divided into the following parts: 1. Disconnect from the power source: This operation requires a race against time to use the fastest and safest way to cut off the power source according to the site environment and conditions, or to disconnect the patient from the power source, such as closing the electric gate, cutting the wire, picking the wire, pulling away from the electrocuted person, etc. In the above process must be strictly insulated from the electrocution, not directly touch the electrocution, the choice of equipment must also be absolutely insulated, such as the use of dry wooden sticks. If necessary, place dry wooden boards, thick plastic and other insulating items underfoot to insulate themselves from the ground; 2, emergency treatment: the patient may exist in a pseudo-dead state after the electric shock, so that people around to call 120, while CPR must be persistent and not give up lightly. The operating procedure of CPR requires the rescuer to cross the hands to press the lower 1/3 of the sternum of the electrocuted person, pressing speed 100-120 times / min, pressing depth 5-6cm, the ratio of compressions and artificial respiration is 30:2, 5 consecutive cycles to judge the patient’s breathing and heartbeat recovery. At the same time, pay attention to keep the patient’s airway unobstructed and prevent the back of the tongue from blocking the airway until 120 ambulance personnel arrive; 3. Supportive treatment: Mainly to maintain respiratory and blood pressure stability, actively prevent and treat cerebral edema, and prevent complications such as acute renal failure. Early use of hypothermia therapy, correction of water, electrolytes and acid-base balance imbalance, prevention of infection, if necessary, sedation, analgesia. Electrocution casualties should be routinely injected with tetanus antitoxin, and the skin around the trauma of electric burns should be treated with iodophor disinfection and covered with a clean dressing wrap to reduce contamination. Patients who suffer from hypoxia after electric shock are more common and may consider applying hyperbaric oxygen therapy to improve the oxygen content of the body and effectively correct hypoxia. Depending on the situation, early psychological intervention can be considered. The treatment of electric shock injury is comprehensive and involves many disciplines, which should be mastered according to the specific situation of the injured person.