Heart failure is short for heart failure, and drooling in patients with heart failure can be caused by a number of brain disorders. Heart failure occurs mainly due to a decrease in the contractility or diastolic function of the heart muscle and does not usually cause drooling. If a heart failure patient has a brain disease, such as cerebral infarction or cerebral hemorrhage, the brain function will be damaged to varying degrees, and the abnormal performance of drooling may occur, and there may also be other abnormal symptoms such as slanting of the mouth and eyes, speech disorders, and so on. Heart failure patients drooling, it is necessary to carry out head MRI or CT and other imaging tests to clarify the diagnosis, in the treatment of heart failure, but also for the corresponding treatment of brain disease, so as to make the symptoms of drooling slowly improve.