For first aid for electrocution, the patient should be disconnected from the power supply, that is to say, to cut off the power supply. Because people are a conductor, if not cut off the power can conduct electricity, in the process of going to the rescue, touching the patient himself will be electrocuted, so the first time to cut off the power. If you can not find the power switch, you can use a stick or bamboo insulated object to pick the wire, or the patient out of the power to get him out of the power, out of the power, if the person has been electrocuted cardiac arrest, to immediately perform chest compressions and mouth-to-mouth artificial respiration. First of all, let him lie down, untie the collar and belt, then position the midpoint of the nipple line, press with the palm root of both hands, the required depth of compression is 5-6cm, the frequency of compression is 100-120 times/minute, after 30 compressions, give two mouth-to-mouth artificial respiration, 30 compressions and two mouth-to-mouth respiration, after 5 consecutive cycles of such compressions, to assess his voluntary heartbeat After 5 consecutive cycles of compressions, assess whether the person’s voluntary heartbeat and breathing have recovered. If it is restored, you do not need to continue compressions, if not to continue compressions, in addition to the process must seek help from the surrounding people to call 120 to seek professional medical assistance, professional medical personnel in place after the corresponding treatment will be given to him, to be sent to the hospital in a timely manner.