Drooling at the corners of the mouth, this condition is recommended to observe whether there exists asymmetric nasolabial folds or asymmetric frontal lines, whether there exists meal leakage and inability to whistle. If there exists the above clinical manifestations, it is mainly considered to be due to facial nerve damage and facial palsy. However, if there is obvious dizziness, headache, unfavorable speech function or unfavorable limb movement, it is considered to be caused by damage to the central nervous system, and it is recommended to promptly visit the neurology department to observe whether there are obvious problems of the cerebral nervous system. If there is gastritis with acid reflux, it may lead to gastroesophageal reflux and drooling, which needs to be combined with other clinical symptoms to make a comprehensive judgment, but if there are neurological changes, active treatment is needed to avoid adverse reactions and sequelae.