Nicotine commonly known as nicotine, if nicotine poisoning occurs, early vomiting, gastric lavage, skin contamination immediately with a large amount of water or strong tea water rinse, respiratory inhalation should be removed from the environment, timely breathing fresh air. Patients with respiratory failure and cardiac arrhythmia should be sent to the doctor immediately. Patients in cardiac arrest should be immediately treated with cardiopulmonary resuscitation and symptomatic support, including regulation of electrolytes, acid-base balance, and strengthening of nutritional support therapy. Nicotine is an unpleasant, bitter, colorless, transparent oily liquid, highly volatile, easily formed in the air dark gray, can be quickly dissolved in water, through the mouth, nose, bronchial mucosa is easily absorbed by the body, stick to the skin surface of nicotine can be absorbed into the body. When nicotine enters the body will produce many effects, such as vasoconstriction of the peripheral blood vessels of the extremities, accelerated heartbeat, increased blood pressure, faster breathing, changes in mental status, there will be a state of excitement, but also cause platelet aggregation, resulting in heart vascular blockage, hypertension, stroke and other heart diseases.