Heart failure is the ultimate manifestation of death from various heart diseases and can be either acute or chronic heart failure, and is not always exclusively an emergency. At the time of acute heart failure, the patient experiences sudden onset of dyspnea, chest suffocation, cyanosis of the lips, wheezing, and general sweating, which can cause cardiac arrest if not treated urgently. Generally this kind of attack needs to come to the hospital for resuscitation as soon as possible, what the family can do is to let the patient sit in a sedentary position, with both legs down to be able to reduce the breathing difficulty, and the patient should try to move as little as possible to reduce the burden on the heart.