Left heart systolic dysfunction may or may not be serious, if the degree of systolic dysfunction is small, there is no obvious symptoms of heart failure, standardized treatment, not combined with other systemic diseases, may not be serious; on the contrary, it may be serious, need to be specific, specific analysis, can not be generalized. 1. The situation is not serious: some patients have a small degree of left heart systolic dysfunction, the body through the regulation of neurohumoral regulation is very good compensation, so that the patient does not produce obvious symptoms of heart failure, through the regulation of lifestyle and standardization of medication, such as digoxin, furosemide, candesartan and other treatments, and there is no comorbidities with diabetes mellitus, hypertension, hyperuricemia and other systemic diseases, the situation may be not serious. 2. Serious situation: some patients have a large degree of left heart systolic function reduction, without standardized treatment, combined with more systemic diseases, repeated episodes of heart failure and hospitalization, this situation may be more serious, with the risk of malignant arrhythmia and sudden death. If the diagnosis of left heart hypocontractile function is confirmed, it is recommended to visit the hospital as early as possible and undergo standardized treatment in order to reduce the adverse effects of the disease.