6-minute walk 600 meters can not completely exclude heart failure, this test is mainly a simple assessment of chronic heart failure, for the early diastolic insufficiency of heart failure through this is no way to determine. 6-minute walk test, mainly used to determine the exercise endurance of chronic heart failure patients, if the 6-minute walk more than 550 meters, you can judge the patient’s activity endurance is better, but can not be 100% through this test to determine that the patient does not have heart failure, because for some of the early diastolic insufficiency heart failure patients, cardiac compensation is still good, usually activities are not significantly restricted, but in fact, it is already in the early stage of heart failure. Heart Failure To determine the presence of heart failure, it is necessary to combine the patient’s usual clinical symptoms, signs, blood test atrial natriuretic peptide, improve the cardiac ultrasound, electrocardiogram, chest X-ray and other tests to make a comprehensive judgment.