The most common symptoms of chronic heart failure are dyspnea, gastrointestinal symptoms, etc. The most common symptoms of acute heart failure are sudden severe dyspnea and cardiogenic shock manifestations. 1.Chronic heart failure: left heart failure can appear different degrees of dyspnea, the earliest exertional dyspnea. The most typical symptoms are sitting breathing and nocturnal paroxysmal dyspnea. The right heart failure can appear digestive symptoms, manifested as abdominal distension, lack of appetite, nausea, vomiting and so on. 2. Acute heart failure: patients will have sudden heart failure, increased respiration, pallor, decreased blood pressure appearing cardiogenic shock, which can cause tissue hypoperfusion, cold and clammy skin, significant decrease in urine output, impaired consciousness and so on. Appeal symptoms, it is recommended to go to the hospital for timely treatment.