Dilated cardiomyopathy is a serious disease of the heart, and in the middle and late stages of dilated cardiomyopathy, patients will experience severe heart failure and even death, for the following reasons: 1, heart function cannot meet the normal needs of the body, and corresponding problems occur in the major organs, such as pulmonary circulation stasis, leading to serious intrapulmonary infections, resulting in death due to infection; 2, affecting the function of other organs, such as kidney function, leading to electrolyte 3, may appear malignant arrhythmia, dilated cardiomyopathy patients are prone to ventricular tachycardia or even ventricular fibrillation, this malignant arrhythmia can not be treated in time, sudden death can also occur. Dilated cardiomyopathy is a relatively critical condition in heart disease. In case of dilated cardiomyopathy combined with arrhythmia, patients are advised to have an ICD implanted to save their lives. In addition, attention should be paid to the care of dilated cardiomyopathy to avoid infections, as severe infections can aggravate the rate of death in patients with dilated cardiomyopathy.