In clinical practice, for patients with heart disease, if the patient suffocates in sleep, it often indicates that the patient’s left heart failure is more serious. In the clinical management, the patient can be given a position of sitting to improve the patient’s breathing difficulties, and the patient can be given oxygen to contact the doctor. After seeking medical attention, the patient can be given electrocardiography, cardiac ultrasound, cardiac enzymes, routine blood count, chest X-ray and other related examinations to further clarify the cause of the patient’s illness and to effectively assess the patient’s condition. The main clinical treatment is to give diuretics, cardiotonic drugs and antibacterial drugs to improve the patient’s heart function. Patients with heart disease should pay attention to dietary modification in their daily life, such as limiting salt intake as much as possible and giving low-fat food intake. In the course of daily life, it is important to pay attention to rest and to avoid exertion and mood swings and other related triggers.