There are many reasons for electrocution in winter, including environmental reasons, clothing reasons, nerve damage and so on. 1. Environmental reasons: in winter the air is relatively cold, but also drier than spring and summer, resulting in insufficient moisture in the environment, humidity is not enough to lead to electrostatic interference, so that too much static electricity in the environment, distributed in the metal or electronic surfaces, the hand touched when there will be the illusion of electric shock. 2. Clothing reasons: now clothing selected by a variety of fabrics, common on the chemical fiber class, and this type of clothing will be worn between the skin and the human body to produce a large area of friction, thus generating static electricity, static electricity, and even hear the sound of popping and produce electric fire. 3. Nerve damage: if the patient occurs upper limb injury, especially the median nerve or brachial plexus nerve serious injury, may lead to abnormal nerve discharge phenomenon, so that the patient has the illusion of finger electrocution. If patients often have the feeling of electrocution, it is recommended to go to the hospital as soon as possible for a detailed examination to confirm the diagnosis, and if it is caused by the disease, it should be actively treated under the guidance of the doctor, so as not to delay the condition.