Heart failure can cause a muffled voice, considering that it may be related to the compression of the recurrent laryngeal nerve, combined with pharyngitis. Heart failure patients appear mute voice may and heart pressure laryngeal anomaly have. Heart failure patients are often manifested in heart enlargement, heart enlargement to a certain extent, will cause pressure on the recurrent laryngeal nerve, recurrent laryngeal nerve pressure, can be manifested as hoarse voice symptoms. When the recurrent laryngeal nerve is compressed, hoarseness can be manifested as a symptom. Heart failure patients with hoarseness of voice may also be combined with pharyngitis. Heart failure patients often have poor resistance, easy to respiratory tract infections, such as patients with a combination of pharyngolaryngitis, hoarseness can occur. Heart failure patients appear hoarse, there may also be a combination of vocal cord disease, the symptoms of the patient to the hospital in a timely manner, to clarify the specific diagnosis, under the guidance of the physician to give treatment.