The ultrasound indicators of heart failure are generally EF value, FS value, and the ratio of E peak/A peak. 1.EF value: when the patient’s systolic function is reduced, the patient’s EF value and FS value will be reduced. Heart failure with reduced ejection fraction should be considered when the EF falls below 40%. 2. FS value: Cardiac Ultra FS value is to observe whether the left ventricular systolic function is abnormal or not, which is the shortening fraction of the left ventricle. The normal value is 30% to 45%. If it is less than 25%, it indicates abnormal left ventricular systolic function and possible heart failure. 3. E peak/A peak ratio: the E peak/A peak ratio of normal people should not be less than 1.2. When diastolic dysfunction occurs, the E peak decreases, the A peak increases, and the E peak/A peak ratio decreases. It is recommended to consult a doctor in time for relevant examination, according to the specific situation, under the guidance of the doctor, symptomatic treatment.