Symptoms that may appear in the clinical end stage of heart failure patients include: severe dyspnea, severe tissue edema, large body cavity fluid symptoms, mental symptoms, etc. 1. Severe dyspnea: heart failure patients with terminal cardiac function is seriously low, which in turn causes severe pulmonary stasis, resulting in severe dyspnea, manifested as wheezing, deep breathing, cyanosis and even inability to lie down, etc. In addition, severe pleural effusion and large amount of ascites will also aggravate the dyspnea. In addition, severe pleural effusion and large amount of ascites will also aggravate dyspnea. 2. Severe tissue edema: a large amount of blood is stagnated in the venous system during heart failure, which causes the hydrostatic pressure of capillaries to rise continuously and the generation of tissue fluid to increase, thus leading to severe tissue edema, mostly manifested as obvious edema of lower limbs, and in severe cases, edema of the face can also occur. 3. Severe body fluid symptoms: severe venous stasis in heart failure will also promote the formation of pleural fluid and ascites, and patients often have a large amount of pleural fluid and ascites before death, which is manifested as respiratory distress, abdominal distension, and thoracic dilatation. 4. Mental symptoms: cerebral edema, ischemia and hypoxia and carbon dioxide retention will seriously affect the brain function and a series of mental symptoms, such as agitation, indifference, anxiety, drowsiness, coma until death. It is recommended to consult a doctor as soon as possible to avoid delaying the condition.