There is no precise time for how often heart failure will have an acute attack, and it is related to a variety of factors, such as infections, whether or not to take medication regularly. Patients with chronic heart failure can have acute episodes, and acute episodes can have obvious triggers, such as myocardial ischemia, serious infections, tachyarrhythmia, etc. However, there is no accurate time for how long an acute episode will occur, and the number of acute episodes varies significantly between patients with different conditions and different compliance. Heart failure patients can be stabilized for a long time if they can be treated actively, control various risk factors and adhere to oral drug therapy. Some patients have poor adherence and do not take medication regularly, and may be accompanied by a variety of underlying diseases, which can lead to recurrent episodes of the disease and may even be life-threatening. Patients with heart failure should formulate a scientific treatment plan under the guidance of a physician and adhere to oral drug therapy to avoid recurrent episodes.