The improvement of heart failure can be reflected in the patient’s symptoms, physician’s physical examination and objective examination indicators. 1. Symptoms: As the condition of heart failure improves, the patient’s symptoms such as chest tightness, shortness of breath, poor appetite, edema, cough, sputum and so on will be improved accordingly, and the activity tolerance will be increased, and the frequency and degree of nocturnal paroxysmal dyspnea and sedentary respiration will be reduced, and so on. 2. Signs: After the condition of heart failure patients is stabilized, their blood pressure, heart rate and respiratory rate tend to be stabilized, the edema in the low hanging area is reduced or disappeared, and the wet rales in the lungs and cardiac arrhythmia can also be reduced or disappeared. 3. Examination: blood B-type natriuretic peptide level decreases after the improvement of heart failure, and the left ventricular ejection fraction improves as shown by color ultrasound in some patients, and even the enlargement of the heart can also be improved. Heart failure patients in the acute and stabilized period should be standardized treatment under the guidance of physicians, and regular review and re-examination.