The main cause of contact electrocution is due to the human body in contact with the device or the existence of anti-program operation and other issues. 1. The human body in contact with the device: the human body is a conductor, because the human body contains conductive substances in water, so when the human body in contact with the conductive part of the device can form an electric current, so that the electric current into the human body, the severity of the ear injury and the intensity and frequency of the electric current has a direct relationship. 2. The existence of anti-program operation: the existence of anti-program operation, such as lighting with electricity, screwing bulbs with wet hands, without the necessary safety measures, etc., may lead to the human body to have a direct electric shock. Electrocution is the human body and the power supply after contact with the current into the body resulting in tissue damage, may also lead to cardiovascular and central nervous system damage, serious patients may even lead to cardiac arrest. Electrocution must be decisive and urgent treatment, cut off the power supply in time, emergency rescue, it is recommended that you can consult the emergency department of the regular hospital, so as not to delay the condition.