Left ventricular hypodiastolic function is not necessarily heart failure. When the left ventricular systolic function decreases the cardiac ejection fraction decreases for ejection fraction reduction heart failure; and ejection fraction preserved heart failure or ejection fraction intermediate value of the rise of the failure can be combined with left ventricular hypodiastolic function. The current classification of heart failure is mainly based on the ejection fraction EF, when the EF is less than 40% for ejection fraction reduced heart failure; when the EF is 41%-50% for ejection fraction intermediate heart failure; when the EF is more than 50% for ejection fraction preserved heart failure. In this case, heart failure with preserved ejection fraction or heart failure with intermediate ejection fraction may present with left ventricular hypodiastolic conditions. However, the diagnosis and classification of heart failure should be based on the patient’s symptoms, signs, BNP (brain natriuretic peptide) or NT-proBNP (brain natriuretic peptide precursor), etc. The diagnosis of left ventricular hypodiastole should not be based on the left ventricular hypodiastole alone, and it should be evaluated by the clinician in a comprehensive manner.