It is understood that static electricity is caused by mutual contact and friction between objects. Static electricity carried by human body is mainly due to less rainfall, lower humidity and dry air in winter. Long-term friction between skin and clothes, clothes and clothes will produce static electricity. Leather and wool clothes produce more static electricity, which will exist in the body after being absorbed by the human body. It will be released to a certain extent, giving people the feeling of electric shock. According to medical experts, static electricity will bring certain harm to human body. The electrostatic interference generated by human body can change the normal potential difference on the surface of human body, and affect the normal electrophysiological process of myocardium and the normal conduction of ECG without interference. This static electricity will aggravate the patient's condition or induce premature beats. Persistent static electricity will also increase the alkalinity of blood, lead to the decrease of calcium content in serum and the increase of calcium excretion, which will cause skin itching and pigmentation, affect the physiological balance of human body and interfere with people's emotions. Many computer workers suffer from facial diseases such as erythema and pigmentation. This is because the static electricity generated by the computer screen attracts a lot of suspended dust and stimulates the face. In addition, because the skin of the elderly is relatively dry than that of the young, and the cardiovascular system is aging and the anti-interference ability is weakened, they are more susceptible to static electricity and cause cardiovascular diseases.