Frontal lobe damage is mainly caused by trauma, congenital vascular malformation, congenital developmental abnormalities, etc. The clinical manifestations after its damage are mainly: 1. Psychiatric symptoms: mainly mental disorders, dementia and personality changes. 2. Frontal ataxia: its clinical characteristics are clumsy movement of the lower limb contralateral to the lesion and staggering gait. 3. Language and writing disorders: language disorders are mainly manifested as motor aphasia, where patients can understand the meaning of language but cannot express it verbally or express it incompletely. 4. Common hemianopia: caused by frontal 5.Paralysis: Due to the location and degree of damage in the precentral gyrus, monoplegia, central facial palsy, tongue palsy, and hemiplegia can occur in severe and extensive damage.6.Strong grip and groping reflexes.7.Frontal lobe lesions may occasionally show symptoms such as bulimia, hypersexuality, hyperthermia, and excessive sweating.