Nausea and vomiting after smoking are usually caused by diseases such as pharyngitis and chronic gastritis or due to excessive nicotine intake. After symptoms appear, you should avoid smoking and seek medical examination so as not to delay treatment and cause aggravation of the condition. Common causes 1, excessive intake of nicotine: smoke produced when smoking will not only enter the lungs, but also through the throat into the stomach, smoke contains nicotine components, long-term large intake, will stimulate the pharynx and stomach mucosa, thus causing an inflammatory response, regurgitation, vomiting performance; 2, pharyngitis: if the patient itself suffers from pharyngitis, smoking when the pharynx is stimulated by smoke, aggravating the inflammatory response, resulting in inflammatory secretions increase, causing throat discomfort, nausea, regurgitation symptoms; 3, chronic gastritis: chronic gastritis patients with gastric mucosa damage, smoke stimulation will aggravate the mucosal damage, causing gastrointestinal tract dysfunction, and then nausea, vomiting symptoms; 4, peptic ulcer: gastric and duodenal bulb ulcer, smoke stimulation will aggravate the mucosal damage, causing gastrointestinal tract dysfunction, and then nausea, vomiting symptoms. symptoms. Treatment methods should be minimized in daily life, patients with gastritis and pharyngitis should be prohibited from smoking, drink more water, pay attention to a light diet, eat less and more meals, avoid overeating, avoid eating cold, spicy, greasy food. In addition, you can also apply drugs such as pharyngitis tablets to relieve pharyngeal discomfort and drugs such as omeprazole and ranitidine to protect the gastric mucosa under the guidance of a doctor to reduce the stimulation of undesirable factors.