If a patient presents with tachycardia accompanied by nausea and vomiting, the following points should be considered: First, cardiogenic diseases are considered, often in coronary unstable angina or acute myocarditis, acute pericarditis, or if the patient has malignant arrhythmia, severe heart failure, especially in right heart failure, the patient will present with clinical symptoms of tachycardia accompanied by nausea and vomiting. Second, if the patient has severe hypertension, such as grade 3 hypertension or higher, the patient has clinical symptoms of dizziness, headache, tachycardia, nausea, and jet-like vomiting. Third, for digestive system diseases, such as patients with severe acute gastroenteritis, acute cholecystitis, pancreatitis, or patients with obvious gastroduodenal ulcer, there will also be nausea, acid reflux, heartburn, abdominal pain, accompanied by the clinical symptoms of vomiting, and at the same time, it will also reflexively lead to clinical symptoms of tachycardia.