6 minutes walking 500 meters may exist heart failure, but the results are not absolute, need to be combined with the results of the examination comprehensive judgment. Clinical 6-minute walking distance is an assessment of the degree of heart failure, 6-minute walking distance if less than 150 meters, considered severe heart failure, 6-minute walking distance between 150 ~ 450 meters, considered moderate heart failure, if greater than 450 meters, considered mild heart failure. The 6-minute walk distance can provide a preliminary assessment of the patient’s cardiac function, which is mainly used for the evaluation of patients with heart failure, but the specific degree of heart failure should be referred to the patient’s symptoms and cardiac ultrasound and other related results, for example, patients with heart failure will have a significant increase in BNP, cardiac ultrasound will also appear in the ventricular structure of the cardiac changes. The 6-minute walking distance is not the main basis for the diagnosis of heart failure, but only an assessment of heart failure; at the same time, it is not recommended that patients assess their own heart function, if you consider that there are symptoms of heart failure such as chest tightness, shortness of breath, edema, it is recommended to consult a doctor as soon as possible, to avoid delaying the condition.