Alternating pulses are pulses with a normal rhythm that alternate with one strong and one weak pulse. As heart failure worsens, alternating pulses may be detected on palpation of the peripheral arteries. Diagnosis is usually found by the patient’s physical signs and laboratory findings. Patients presenting with alternating pulses generally have a history of hypertension, coronary artery disease, myocardial infarction and dilated cardiomyopathy. The presence of fatigue, weakness, exertional dyspnea, telescopic whistling and nocturnal paroxysmal dyspnea is suggestive of left heart failure. Heart people with chest tightness and weakness suggest arrhythmias, such as paroxysmal tachycardia or atrial tonicity. Patients with pre-existing congestive heart failure, especially atrial fibrillation, developed cardiac medical chest tightness, nausea and vomiting during the application of digitalis, suggesting digitalis toxicity. Cardiac examination revealed an enlarged heart (left heart enlargement was dominated by an increased heart rate, hyper diastolic gallop rhythm was heard, and wet rales were heard at the base of both lungs, suggesting left heart failure. The patient had jugular venous pulsation and tachycardia or arrhythmia on auscultation, suggesting arrhythmia. X-ray examination shows an enlarged heart shape, predominantly left heart, and pulmonary stasis suggesting left heart failure. Electrocardiography shows that a positive ECG V1 lead P-wave terminal vector (PtfV1) is diagnostic of left. has been a common and important indicator of insufficiency. In addition, ECG has specific diagnostic value for digitalis toxicity, paroxysmal tachycardia and atrial tonicity. In addition, there are echocardiography, radionuclide and magnetic resonance imaging, traumatic hemodynamic examinations, etc. The diagnosis of alternating pulses is not difficult to determine with the examination results.