Heart failure is a group of cardiovascular syndromes that are extremely common in clinical practice. Myocardial insufficiency caused by coronary heart disease, hypertension, and arrhythmia can cause heart failure. The early symptoms of heart failure are mainly manifested in the following aspects. 1, tiredness and weakness: If there is irritability and insomnia during night sleep, or if there is coronary heart disease, hypertension, pulmonary heart disease with symptoms such as tiredness and weakness, unresponsiveness, apathy, anorexia, drowsiness or frequent awakening in sleep, it may be caused by insufficient blood supply to the brain, which is one of the early manifestations of heart failure! 2, nocturnal shortness of breath: with coronary heart disease, sleep at night must be padded pillow, lying down after the cough shortness of breath, and often wake up during sleep, need to sit up and gasp for a while to gradually relieve, may also be a manifestation of hidden heart failure. 3, fast pulse: heartbeat is often an early manifestation of heart failure, a little activity pulse rate is more than 100 times / minute, or arrhythmia, these are indicators should go for ECG and cardiac function tests as soon as possible. 4, increased nocturnal urination: people with coronary heart disease, hidden heart failure, at night when resting, because of the relative reduction of heart load, increased cardiac output, increased renal perfusion blood, nocturnal urination will also be significantly increased, which suggests the possibility of hidden heart failure, should pay attention to. 5, painless infarction: heart failure is very likely to occur in myocardial infarction, about 25% of the infarction is painless heart attack, and such patients are mostly elderly, and most likely to have hidden heart failure. Patients with cough and phlegm, chest discomfort, shortness of breath and wheezing are often aggravated!