Heart failure causes profuse sweating, which is a sign of sympathetic arousal. The human body on the heart failure, will activate the RASS neurohumoral system, the role of the neurohumoral system is mainly sympathetic over-activation, the essence of this situation is to compensate for heart failure, can make the heart beat faster, the activation of the RASS system in the sympathetic excitation of the performance of the sweat is the sympathetic nerve affects the vasoconstriction. Heart failure sweating, it is recommended to go to the cardiovascular department as soon as possible, because the appearance of such signs, suggesting that the patient is very likely to have heart failure aggravation, induced by sodium retention, need to use furosemide and other diuretics under the guidance of the doctor for treatment, as soon as possible to alleviate the patient’s symptoms. It is recommended to standardize the treatment under the guidance of the doctor.