It is inaccurate to judge heart failure by heart rate alone. Although heart failure is sometimes accompanied by fast or slow heart rate, in many cases the abnormal heart rate may be caused by other diseases, and the diagnosis of heart failure needs to be confirmed by brain natriuretic peptide test, perfect cardiac ultrasound, and combined with the symptoms, electrocardiogram changes, and patient’s physical signs and other comprehensive analyses. Some heart failure patients will have a heart rate still in the normal range, some will have a fast heart rate, such as reaching more than one hundred times, and some will have a slow heart rate, such as less than sixty times. And there are many conditions that can cause abnormal heart rate, such as coronary heart disease, myocarditis, electrolyte metabolism disorders, hypoglycemia, thyroid function abnormalities, infections, emotional excitement, after drinking coffee and strong tea. Therefore, it is inaccurate to determine heart failure simply by heart rate. To confirm the diagnosis of heart failure, it is necessary to combine the patient’s symptoms, signs and symptoms, improve the B-type brain natriuretic peptide (BNP) test, improve the cardiac ultrasound, and also comprehensive electrocardiogram changes to analyze the presence of combined arrhythmia. If you want to confirm the presence of heart failure, it is recommended to go to the cardiology department of the hospital.