The most common causes of sudden chest congestion with nausea and vomiting are digestive system diseases and cardiovascular system diseases, such as reflux gastroesophagitis, chronic gastritis, coronary angina and aortic coarctation, which require immediate and careful examination at a hospital to improve electrocardiogram, chest X-ray, lung CT and gastroscopy, and to draw blood for routine blood tests, electrolytes, liver and kidney functions. If it is found to be an entrapment, blood pressure must be actively controlled and transferred to a large hospital for stent blocking treatment. If it is myocardial ischemia, long-term treatment with secondary prevention medication for coronary heart disease is necessary.