Smoking scalp numbness may be nicotine poisoning, sympathetic nerve excitation, cerebral blood supply insufficiency and other reasons, it is recommended to quit smoking in a timely manner. 1. Nicotine poisoning: nicotine is a strong alkaline substance, a highly toxic carcinogen, after burning tobacco and inhaling too much nicotine, dizziness, nausea, vomiting and other symptoms, accompanied by sensory anomalies, such as numbness of the scalp and other manifestations. You need to stop smoking immediately to get away from nicotine exposure, rest, and drink plenty of water. Severe discomfort requires medical attention. 2. Sympathetic excitation: Smoke from burning tobacco may agitate the sympathetic nervous system after inhalation, causing increased heart rate, blood pressure, peripheral capillary constriction and other phenomena, which may lead to numbness of the scalp. It is recommended to stop smoking. 3. Insufficient blood supply to the brain: Smoking can damage the endothelium of blood vessels and promote plaque formation, thus affecting the blood supply to the brain, resulting in numbness of the scalp, dizziness, memory loss and other related symptoms, the need to quit smoking, and can be taken orally to improve the circulation of medicines, such as ginkgo biloba to improve the symptomatic treatment. Smoking is harmful to health, it is recommended to quit smoking in a timely manner, if the symptoms of scalp numbness are not relieved for a long time, it is recommended to go to the hospital in a timely manner.