Heart Failure Grade III should refer to Chronic Heart Failure Grade III. Such patients should not be able to climb 7 floors in one breath, otherwise it will cause heart failure symptoms and aggravate their condition. The severity of chronic heart failure usually adopts the American New York Heart Association (NYHA) cardiac function grading method. Chronic heart failure class III refers to patients with physical activity is significantly limited, lower than usual general activities that cause heart failure symptoms. Therefore, patients with heart failure class III climbing up to the 7th floor may cause cardiac discomfort, dyspnea and other symptoms, and may even induce acute exacerbation, which should be avoided as much as possible. The treatment goal of chronic heart failure class III is to prevent and delay the development of heart failure, alleviate clinical symptoms, improve quality of life, improve long-term prognosis, and reduce the mortality rate and hospitalization rate. In addition to regular medication, patients with heart failure should maintain a healthy lifestyle and stable emotional state, and avoid heavy physical activity, which is more favorable to the prognosis. Patients with heart failure should strictly follow medical advice, take bed rest, and avoid exercises that increase the burden on the heart, so as not to aggravate the condition and cause serious consequences.