Smoking regurgitation nausea may be physiological causes, but also may be related to chronic gastritis or chronic pharyngitis and other diseases. 1. Physiological reasons (1) Chronic carbon monoxide poisoning: cigarettes contain a large amount of carbon monoxide, which has 240 to 300 times greater binding capacity with hemoglobin than oxygen. If you smoke a lot of cigarettes for a long time, it can lead to chronic carbon monoxide poisoning, which will cause vomiting, nausea, headache and dizziness and other symptoms. (2) Nicotine poisoning: nicotine is also known as nicotine, if you smoke too much, nicotine will dissolve in the blood, so that smokers will have this reaction, which is often manifested as dizziness and nausea, and a strong sense of vomiting, but also a feeling of general weakness, and even incontinence. 2. Pathological causes (1) Chronic gastritis: Chronic gastritis is mainly manifested by acid reflux, nausea, epigastric pain and other symptoms, which can be stimulated by smoking and lead to the obvious manifestation of the above mentioned symptoms. Avoid the stimulation of tobacco, alcohol and spicy food, and use the medicines such as aluminum hydroxide tablets and bismuth pectin capsules to treat the symptoms. (2) Chronic pharyngitis: it can manifest discomfort in the pharynx, foreign body sensation, local dryness and itching, etc. Gastrointestinal nausea can occur under the stimulation of tobacco and alcohol, it is recommended to avoid stimulation of tobacco and alcohol, keep the oral cavity clean, drink more water, and also use watermelon cream tablets and other medications. Smoking regurgitation nausea, it is recommended to go to the hospital in a timely manner, in accordance with the doctor’s prescription medication, to avoid delaying the condition.