Patients with heart failure may present with signs such as severe dyspnea, grayish color, profuse sweating, cyanosis, emotional irritability, and confusion before they die. Heart failure is a serious cardiac condition that refers to a group of clinical syndromes in which ventricular filling or ejection capacity is impaired due to any structural or functional abnormality of the heart, including chronic and acute heart failure, and inappropriate treatment or care can affect natural life expectancy and, in severe cases, lead to death. Heart failure patients can appear before the death of a variety of signs and symptoms, the vast majority of patients can appear severe dyspnea, respiratory slowing, frequent coughing, grayish cyanosis, profuse sweating, cyanosis, extreme agitation, confusion and other aura performance, this time should pay attention to, and actively prepare for the rescue measures, in order to avoid death due to the lack of timely rescue. Once the diagnosis of heart failure is confirmed, the patient should go to a specialized cardiology clinic for treatment.