Drooling in cerebral infarction is mainly a manifestation of facial palsy caused by cerebral infarction, which is also clinically known as central facial palsy. Patients mainly present with facial muscle paralysis, and can have crooked corners of the mouth, facial palsy, and drooling, but patients have better eye fissure closure and basic symmetry of frontal lines, which should be differentiated from peripheral facial palsy. In patients with peripheral facial palsy, in addition to facial palsy, the affected side may have smaller eye fissures and asymmetric frontal lines. Patients with cerebral infarction may also present with somatic dysfunction, such as weakness and abnormal sensation in one limb. Patients with dominant hemisphere lesions can also develop speech dysfunction, and in severe cases, patients can develop impaired consciousness, which can even lead to death. In patients with cerebellar and brainstem lesions, dizziness and ataxia can occur.